A.N.: Hey all, guess who's not dead? Life's changed a lot since I last wrote a chapter. Got a job, finished my master's degree, road out the biggest plague in a century, got a new job in a different state, not to mention the release of Halo Infinite; I really could go on, but that's not what you're here for now is it? Well don't you worry, we have a piece fresh off the presses (and by fresh I mean finished more than a month ago), courtesy of my ole pal Cor Tenebrae. We've recently been talking about this series and he decided to write something to act as a bit of a through line for the pieces so far, and maybe more to come. So please, make sure to thank him for putting together this chapter for all of us. And if you hate it, well you know who to blame then. Hope you all enjoy!

In the Locker Room Part V

An Illicit Affair

Cortana breathed deeply through her nostrils. She had to. The ball gag in her mouth and collar around her neck were restricting her breathing. The man behind her tugged on her leash, and she felt her pussy spasm around his cock. Her wrists and ankles were bound by rope which had been suspended from the ceiling. The man that tied her up was good at what he does, and Cortana found herself bent into the perfect fucking position, nothing more than a cock-sleeve for the depraved mind that had put her there.

Even as her captor pounded into her, Cortana's thoughts wandered. She had always watched over the Master Chief. First as an AI, and now as his lover. She always stayed up to watch his missions. Keyed in his comms to give crucial information if needed. Or decode a lock that needed opening. She had always waited for him to come back to the Infinity safe and sound.

Yet now Chief was on a mission. A dangerous one, and the man who had sent him into danger was fucking her cunt for all it was worth. Cortana's eyes rolled back into her head, and she came, screaming into the ball gag. All thoughts left her, but if she could still think she might have wondered how she ended up here.

…

12 Hours Earlier

Cortana woke up to an alarm and a familiar weight against her. She snuggled hard against John, burying her face into his muscular chest. "Ugh, I can't believe you actually have a day off when I have to work."

Master Chief put a large but gentle hand on her back, rubbing her soothingly. "I'm not the one that makes the schedule."

"I know," she pouted, snuggling against him harder. She closed her eyes and tried to think of the dream she had. It was like the dream she had about the Warden Eternal. Some vile aliens had captured her and had their way with her all tied up. It had been a good dream, but it was fading now. Still, it had left her all worked up.

John seemed to have sensed her arousal. His hand wandered down lower, teasing the hem of her night shirt and toying with the top of her ass. "I'd love to," she sighed, pushing his hand away. "But I really must get moving. Palmer has been riding my ass about those lab results."

John smirked. "Has she?"

Cortana gave his hand a playful slap. "You still trying to relive what the three of us did on S-Deck? That was a one-time thing."

"Sure, it was."

"It was," Cortana replied, a little sterner than she meant to be. She sighed, "The well has run dry with my escapades anyway. It's hard enough to be discreet, and even harder when everyone thinks my boyfriend will rip their head off if he ever found out."

John chuckled again and gave her a hard squeeze. "Well, thanks for preserving my reputation in any case."

"Yeah," Cortana said, rolling out of bed and stretching. "God forbid. Nobody would take your tough guy act seriously anymore if they knew they could have a romp with me without any consequence." From the corner of her eye, she thought she saw John's cock twitch from underneath the covers. It might have been her imagination, or it might have been that while stretching her perfect heart shaped ass had been revealed to him. Either way, while it wasn't like her to leave Chief wanting, she really did have a lot of work to do.

Sauntering over, she gave John a quick kiss on the cheek. "Dinner tonight? I think I can get us someplace private."

John smiled and kissed her back. "Love to."

…

Cortana groaned as the hot water hit her. Being shacked up with the living legend himself had its perks. A private shower being one of them, though it was a bit small. The big man himself never used it because of that fact, so Cortana had taken the liberty of making it her own.

But it was not the big guy she was thinking about as she suds up her pale curvy body. In reality she had only been partially truthful to John. Obtaining lovers that were both willing to risk a onetime fling with her and keep their mouths mostly shut about it was rather difficult at times, which was true. But there was another big reason. None of it seemed satisfying anymore. Not when they could not fuck her like Lasky had.

A smile formed on Cortana's plump lips, and she leaned back against the shower wall, her hands wandering across her breasts and down between her legs. Admiral Thomas Lasky. A powerful, handsome, and much older man than her. Exactly Cortana's type. But here was more. No one had ever fucked her like he had. Fucked her hard and rough without any concern that she might break. All her other lovers, except the ones in her dreams, had always been so gentle with her. John especially, who always seemed a little too worried that his Spartan strength might hurt her if he got carried away.

But she wanted a lover that got carried away. She wanted a powerful man that commanded dozens of ships and thousands of soldiers to handcuff her to his desk and have his way with her. It had been the riskiest seduction she had ever tried, but it had paid off wonders, and Cortana was certain that the both of them had only skimmed the depths of the depravity the two of them could get into.

Her fingers found their way to her sensitive clit, and clutching her breast with her other hand she moaned out his name. "Thomas…"

…

"Cortana!" Lasky gasped, hunched over in his large walk-in shower. One fit for an Admiral. He was stroking his cock furiously, the image of a pale raven-haired beauty stuck in his head. The vision of her face blushing and crying out as he made her cum entered his head. It was too much, and Lasky came. Just as he had done a hundred times before while thinking of her. As the post nut clarity settled in, so did the guilt.

It had all been a mistake. A horrible mistake. Spartan 117 had been his hero when he was a teenager. The man had saved his life. The entire galaxy on multiple occasions in fact, and here he was masturbating to the memory of the time he had fucked his girl. Thomas washed himself off, trying to clear his head of inappropriate thoughts. It was no use. If he never saw Cortana again it might be easier, but with Cortana being the head of the science time, the Egghead in Chief as Palmer put it, he had to collaborate with her on a regular basis. Had to smell her perfume and look at her beautiful face while pretending like they had not slept together.

It was even worse when he had to work with Master Chief. The guilt he felt always threatened to consume him. Sometimes he wondered if he should just tell Chief and get it over with. Perhaps being thrown out of an airlock was not so bad. Or maybe have the two of them transferred, but his still intact morals told him that would be an abuse of power. Hell, he could not even bring himself to get rid of the desk that him and Cortana had fucked on, even though he had to see her naked body every time he sat down at it.

Lasky punched the shower wall, his cock growing hard again at the thought. "It has to end," he muttered to himself. "Somehow it has to end."

…

Cortana yawned as she poured her second cup of coffee. The results were slow in coming in and she had a moment to take a break. Alone in the lab she had not bothered with looking professional. A loose lab coat, some baggy pants that she did not mind getting dirty, and a pair of slippers were all with which she had bothered. She had not even bothered to put a bra on, which was a bit of a mistake since the chilly air of the lab made her nipples stiff. Still, she did not expect anyone to be in. Everyone except her had the day off, after all.

As the machines whirled and buzzed around her, Cortana had a moment to think about where her life was taking her, her relationship with John being at the center of it. Chief was her best friend. Hell, Cortana thought that he might even be her soul mate, and the sex they had was usually very fulfilling. There was an intimacy and love there that was simply not present with any other lover she had taken. But she also knew that there was something else. Something dark and wicked inside her that yearned to be fulfilled.

Cortana heard the door to the lab swoosh open and she muttered a curse, folding her arms across her breasts in an effort to hide her protruding nipples. She knew she should have worn a bra today. It figured that one of her stupid subordinates, who by the very nature of them being subordinate to her she would never be attracted enough to sleep with, would think to come in on their day off. Probably to pick up a data pad or some notes they left behind. Well, now they would get to see a creep shot of their boss. Cortana could already hear the bragging, and she grumbled.

But it was not an intern that came through the door, but rather Thomas Lasky of all people. Cortana dropped her arms in surprise, and Lasky's eyes momentarily looked down at the clear outline of her boobs. He managed to pry his eyes away from them and looked back up.

"Cortana," he breathed, sounding out of breath for some reason.

"Admiral," She answered, still shocked by his sudden appearance. It suddenly occurred to her that the two of them had not been alone together since that fateful day. "What brings you here?"

"It's…" Lasky stammered, seemingly trying to screw up his courage. "It's about us. About what we did a few months ago."

Cortana smiled, evil thoughts entering her mind. So, she had not been the only one that could not stop thinking about that day. And here he was, in her lair and with no one around to hear him cry out for help. Cortana bit her lip. She had always informed John before having a fling with someone, but this opportunity was too good to pass up.

"You mean that time we fucked," she replied bluntly. "On your desk if I remember correctly.

Lasky blushed. "Well, yes." He cleared his throat. "Look, I've been thinking about it and the guilt is just a little more than I can handle."

"Guilt?"

"Yes, about what we did."

Cortana leaned against the black laboratory table that she was standing next to. Damn, if only she had foresight, she could have worn something a little tighter. It was a little hard to look sexy wearing baggy clothes, but she tried her best. It seemed to work well enough as Lasky was busy staring at her boobs again. "And what did we do, Thomas?"

Lasky, realizing he was looking at her boobs again but unwilling to look her in the eye, instead looked away. "Well, we uh…."

"Had an affair," Cortana completed the sentence for him. "Committed adultery. I cheated on the Master Chief with you. Are those the words you were looking for?"

Lasky's face looked shocked, and he seemed to turn a pale color. "Yes, if you want to put it that way." He shook his head. "Look, I've been thinking. We should tell him. About our affair. I think the right thing to do is to come clean."

Cortana thought for a moment. If Lasky had really wanted to admit to Master Chief that he had fucked his girl, then he would have done so already. No, that is not what he really wanted even if he did feel guilty about what they had done. Deep down, perhaps subconsciously, he wanted to have sex with her again. Cortana's pussy soaked in front of her panties at the thought of repeating the best night of her life. She made up her mind right then and there to sleep with him again and no one, not even John, would be able to stop her.

"We could do that," Cortana said, slowly unbuttoning her lab coat. "Or you could bend me over this table and fuck me again."

Lasky's eyes grew wide as her lab coat hit the floor. Her baggy sweatpants were next. There she was, with nothing but a pair of tiny blue panties on. Lasky took the tiniest of steps towards her, fingers twitching. "This is wrong," he muttered.

"It is," Cortana agreed. When he got close enough, she reached out to tilt his chin up so that now he was looking directly into her pretty blue eyes. "But doesn't that make it feel so much naughtier."

Without thinking, Lasky found her hands loosely holding her curvy waist. "We shouldn't…."

"Shhhh." Cortana cupped his face in both hands and soothed him with sexy whispers. "You're a powerful man, Thomas. In command of fleets. And I am the beautiful woman of one of your subordinates. It's only natural for you to take what you want." She slowly guided his face towards her boobs, so big and pale with her nipples as a bright pink. "Go on, take everything your heart desires."

Lasky was lost. The moment his face touched her boobs he lost all sense of self control. He growled and cupped her breasts in both hands, squeezing them hard and sucking on her nipples. Cortana threw her head back and moaned. Even with the memory of their last romp fresh in her mind, she still had not expected him to take charge so suddenly.

"You bitch," Lasky growled again, biting down on the top of her breast until Cortana yelped. "You're the most beautiful woman I've ever met. I haven't been able to get any work done since you ruined me."

Cortana smiled, her hands desperately pushing his shirt up and over his head. "You could have had me again at any time if you had just plucked up the courage."

Lasky scowled at her. He was not anywhere near as strong as a Spartan, but he was strong enough to easily pick Cortana up with one arm. With the other arm he quickly cleared off the black lab table, glass shattering on the ground and notes flying everywhere. Cortana should have been furious that he ruined all her hard work, but she was far too turned on to care. After the table was cleaned, Lasky flopped Cortana onto it so that her ass was sticking up in the air. Before Cortana could even react or say something smart, Lasky had used his shirt to tie Cortana's hands behind her back.

Cortana's heart was racing. Yes, this is what she had been craving. To be tied up and completely at the mercy of a stronger male who intended to use her as nothing more than a tool for his own pleasure. Her blue panties were soaked now. With one quick movement Lasky ripped them off. Then his hand came down hard against her heart shaped ass, spanking her.

"Master Chief is my hero," he said, spanking her again. "The man saved my life. How dare you make me betray him."

"I'm sorry!" Cortana yelped, tears welling in her eyes. It hurt so damn good. She never would have imagined that Thomas was capable of this. She loved it. Hell, a few more spanks and she might end up falling in love with him.

Lasky gave her a lot more than a few spanks. Within moments he had turned her ass cherry red. Both cheeks. He squeezed her perfectly round and thoroughly punished butt, and she could feel his big cock straining against his dress pants and pressing against her leg. "You said I should just take what I want." He withdrew his hand, and she could hear him undoing his pants and dropping them to the floor. "Fine then. I don't give a damn anymore. Fuck the rules and fuck Chief. You're mine from now on, got it?"

Cortana laughed. "Is this the same meek Admiral that came to my lab. My my, Thomas. I'm always surprised at how quickly…AHHHH!"

Lasky had plunged his cock right into her ass. Her ass of all places. He had sodomized her before, but back then he at least had the courtesy of getting his dick slick first.

"Fuck," Cortana shouted, straining against the shirt that had her hands tied behind her. She tried to scoot away but Lasky grabbed her hips and drug her back, his cock sinking in several more inches as a result. "I didn't think you would go right for my ass. Oh fuck, you're breaking me in half."

"Good!" Lasky shouted back, no longer caring if the entire ship heard them. "This is what you get for ruining me. The last few weeks have been torture."

He kept fucking her hard and rough. Being raw dogged in the ass hurt more than the spankings. It felt better than the spankings. The fact that she could not escape made it all the better. Without warning her first orgasm came. He had not even touched her pussy yet and she was already cumming. Not just cumming but squirting. Her love juices ran down both her legs as her pussy spasmed out of control. The pain and pleasure were so great that she pleaded for mercy. Lasky gave none, fucking her ass twice as hard now, and spanking her again too. One orgasm led straight into another, and Cortana thrashed on the table. John had never fucked her like this. He could never fuck her like this. It would never even occur to him.

Her already tight asshole clenched hard around his big cock. Lasky threw back his head and moaned her name as her ass literally sucked the cum right out of him. They were both yelling and cumming, no longer caring if they were caught.

And caught they were.

…

"That's it you little bitch, keep licking." Commander Sarah shoved the face of some blonde headed ensign back into her cunt. Young, beautiful, and barely out of the academy, Palmer was eager to teach the new officer her place in the command structure. From under the desk the young woman continued to lick and suck, doing her best to please her new mistress. Once Palmer was satisfied with her new slave's work, she turned her attention back to the monitor in front of her.

It was a good thing that Lasky had confided in her about why he was looking so sullen lately. It was an especially good thing that Palmer had advised him this morning to go clear the air with Cortana before confessing his sins to Master Chief. Now she was enjoying the live security feed of that haughty slut getting the ass pounding she deserved. Things had worked out much better than predicted.

But there was one other theory that she wanted to try. A little hypothesis she had about Chief, and why such a stud would be so eager to allow his sexy girlfriend to have sex with other men.

…

Lasky gingerly pulled his sensitive cock out of Cortana's asshole. A river of cum followed, drenching the table, and dribbling onto the floor. Still in disbelief at what he had just done, the Admiral untied his captive and rolled her over. Cortana wiped her sweaty hair out of her face and the two stared at each other, seemingly unsure of what to do next. Then slowly, very slowly, Cortana opened up her legs.

Lasky knew exactly what she wanted and did not offer a word of protest. He slid his cock into her waiting wet folds. It felt like coming home, the warm silk of her inner cove embracing him like a glove. Slowly they fucked, both of them taking the opportunity to catch their breath after what had just transpired. At last Cortana spoke.

"You really like tying me up."

Lasky blushed just a little. "Yeah, it's kind of a kink of mine."

"Like fucking other men's girls?"

"No, that one is new." He squeezed her well spanked ass and continued fucking her. He was too tired to feel guilty anymore. All he wanted to feel was the pleasure of her body. So soft and pale, and with curves in all the right faces.

Cortana wrapped her legs around his waist and pulled him closer. "I like it too," She whispered.

"Oh yeah?" Lasky asked, fucking her a little harder now. "I've got some toys, you know. We could try some of them out if you want."

Cortana smiled, her beautiful face becoming even more gorgeous. "I'd love to."

Feeling a little bolder, Lasky reached out to squeeze one of her boobs and play with the nipple between his fingers. "I usually never get to use them. But I've got some other kinks too. Some…fantasies."

Cortana sexily bit her finger, and the look in her eye made his cock pulse inside her. "Oh my, Admiral. There really is more to you than meets the eye."

"You're interested then?" Lasky asked, sounding perhaps a little more eager than he should have.

Cortana laughed. "Thomas, I never in a million years would be able to convince Chief to do bdsm with me. He's far too gentle." She sat up and threw her arms around his neck and bringing her face in so close that their noses were touching. It startled Lasky so much that he stumbled back into the wall, carrying Cortana with him.

"So, you want to keep doing this?" He asked.

Cortana giggled again and licked the side of his face. "Oh, I want to do more than that. Every depravity and debauchery. Every dark fantasy that both you and I have. I want to explore them all together."

Lasky's heart fluttered. Damn, he might actually be in love. With the last shred of morality he had left, the admiral turned Cortana's face to look at him and asked, "What about Chief."

Cortana looked him dead in the eye, "What about him?" Then she leaned in to give him a soul-stealing kiss.

…

It really was not often that John had a day off. He normally did not know what to do with himself. Cortana had left early to go take care of some lab work for Commander Palmer, leaving him with extraordinarily little to do aside from going to the gym or watching a movie in bed. He had half a mind to go pay Linda and Kelly a visit when the door to his room beeped and then slid open.

In walked Commander Palmer herself. A beautiful woman with an Amazon body that was hidden only by a skintight Spartan under suit that left very little to the imagination. Smiling John sat up, his cock already getting stiff at the sight of his old lover.

"I should have guessed that Cortana would find it amusing to send you to me," he said, already undoing his pants.

Palmer raised an eyebrow and smirked, seemingly amused by his eagerness. "Well, she didn't really send me. More like she's the reason why I came."

John, who had been so down to fuck that his pants and underwear were already around his ankles, gave her a questioning look. "What do you mean?"

Palmer's smirk grew wider. She snatched the remote from the night stand next to John's bed and turned on the large monitor that was fixed to the opposite wall. "See for yourself."

John had always been well aware of all of Cortana's sexual escapades. It was a rule between them that neither would have a one-night stand with anyone without first getting the other's permission. Neither had he ever witnessed Cortana fucking one of her temporary lovers, though he had secretly fantasized about it, even beating off to the thought of it a time or two.

What assaulted his eyes changed all that forever. There was Cortana in what he immediately recognized as Lasky's private quarters, suspended from the ceiling in some sort of swing with her ankles and wrists bound. Her breasts as well with tight rope, making her nipples as hard as glass. And she was getting absolutely pounded by none other than the Admiral himself.

But it was not the fact that she was fucking Lasky again that made his heart drop. No, it was the big smile on her face. He had never seen her so happy. Certainly not whenever they were together. And the way she was looking at Lasky too. Full of admiration and respect. Perhaps even falling in love. That look in her eye did something strange to John, and he felt his cock stiffen.

He was startled by Palmer's laugh. John had been so consumed by what he was watching that he had almost forgotten that she was even there. The Commander chuckled, looking straight at the bulge in his sweatpants. "I knew it. You're actually hard, aren't you?"

Immediately embarrassed, John tried to use his hands to hide his shame. But Palmer made a cooing noise, almost motherly, and crawled into the bed with him, kissing his face and neck. "Come now, you know I'm not one to judge. I just think it's rather funny that you get turned on by watching your girl get railed by your commanding officer."

"It's not that!" John protested, though his stiff hard on appeared to be proof enough.

Palmer tisked him, and somehow managed to slip a hand into his sweatpants and grab ahold of his stiff cock. "Come now. We were together for a while before Cortana showed up again. Do you know how many times I've watched you two together? I'll admit it, the jealousy I feel makes it hot. I wonder if she feels the same way when she watches you fuck me. And now you're turned on by watching another man fuck her. It's like some sort of cuckold love triangle. Though I guess since there are four of us that would make it a square…"

"Shut up!" John said with all the authority he could muster. But just then he saw and heard Cortana cum. It was immediately apparent that he had never made her cum like that. Hell, the two of them had never even fucked like that, with her tied up in some weird sex contraption and spank marks all over her ass. Cortana's whole body tensed, and she screamed Lasky's name, and John groaned as he watched her.

Palmer was watching too. "Damn, never would have guessed Thomas of all people would be this kind of kinky, and it's hard to tell from the camera but I think his cock might even be bigger than yours, and yours is damn impressive. I wonder how she fits it all."

"That's enough!" And this time he meant it. John pinned Palmer down onto the bed, his practiced fingers easily finding the hidden clasps on her under suit and ripping it off her. The Commander really did have the body of an Amazon warrior. Like a sexy goddess of battle. John quickly discarded his t-shirt and sweatpants and leapt on top of her, mounting Palmer and immediately folding her over into a mating press.

Palmer moaned and licked her lips as John's cock entered her. He knew he was giving her exactly what she wanted, but he did not care. He had to fuck this woman into submission for the sake of his own manhood, and unlike with Cortana he didn't have to worry about hurting her. Palmer was a Spartan too after all.

He pounded Palmer's pussy like a man possessed, throwing his whole weight behind every thrust. The Commander yelped and cursed him, raking his strong arms with her nails and even drawing blood. But she was loving it. It was clear on her face and the way she came so quickly for him, her cunt threatening to strangle his cock. John pushed through, wrapping a hand around her throat.

"I am not a cuck."

"Sure, you're not, studmuffin," Palmer said mockingly, using Cortana's pet name for him. "You're just getting off to another man fucking your girl. That is totally normal."

"Silence!" He covered her mouth with his hand so she could not talk anymore, but that somehow made it worse, because now all he could hear were the sounds of Lasky and Cortana's fucking. The sound of the Admiral's heavy balls slapping against her pale cheeks, and through the wet squelching of her pussy John could make out what Cortana was saying to her lover.

"Fuck! You fuck me so good. Better than anyone," Cortana was shouting. "I love this cock. Please, never stop fucking. Oh God, I'm going to…"

And hearing Cortana cum was the end for him. John came as well, flooding Palmer's womb with his hot seed. The Commander moaned in delight as he collapsed on top of her, and he heard her chuckling in his ear. "See, didn't that feel good?" She whispered.

John groaned in defeat, knowing that he had easily lost the game that Palmer had been playing with him. Perhaps if he could just get her to leave and turn off the monitor, he could forget that this whole thing had happened. If Palmer promised not to tell Cortana about this then maybe their relationship could even go back to normal.

But unfortunately for John, that's not what Palmer had planned for him at all. Quick as a lioness she pounced on him, rolling John off of her and attacking his cock with her mouth to give him the messy blow job of a lifetime. He meekly tried to push her off, but it was no use. Palmer's lips were wrapped tight around his manhood, holding him prisoner and forcing him to watch all that was unfolding on screen.

…

It was truly life altering sex. Everything previously thought about her plans for the future, her relationship with John, was thrown out the window. All of it was called into question, and Cortana knew that if she and Chief ultimately stayed together (and it was becoming a big IF) their partnership would only survive if it underwent fundamental changes.

As rough as Lasky was, he was gentle as he untied and lowered her from the makeshift swing. The man must have thought that Cortana needed aftercare after such an intense session, but Cortana's heart was still brimming with passion and as soon as she was free she threw herself into the Admiral's arms. They kissed like newlyweds. She kissed him like she had only ever kissed John before, and a small part of her even felt guilty about it.

"Stay with me," Lasky gasped once the kiss broke, staring into her deep blue eyes.

"For how long?" Cortana asked, her eyes half closed. She reached between them to stroke his cock.

"Forever?" He looked hopeful. Cortana giggled. It was so sweet the way he said it.

"Not just yet," she kissed his nose. "That's a decision best made for when we're not right in the middle of fucking."

He seemed disappointed, but it was not a no. It was a delight to see the hope renewed in his eyes. He pulled Cortana's curvaceous body closer to him. "How about tonight then?"

Cortana frowned. She really wanted to. Wanted to know what it would be like to be tied up all night and wake up next to this incredible man all sore and exhausted. But…

"I already promised Chief I would have dinner with him." Cortana had never broken a promise she made to John, but now she was sorely tempted to do so. In fact, the thought of doing it was making her pussy wet. It had long since occurred to her that she had long since broken any boundaries that they had agreed to. This might actually be cheating, but it only turned her on.

"Dinner?" Lasky asked, frowning too.

Cortana nodded. "And I have to finish those lab results. They're for a future mission. It'll be damn near impossible to complete without that intel."

She watched as a few things seemed to click inside Lasky's head. Without realizing it she had just provided a solution out of their current predicament, although it was a terrible one and involving a line Cortana had never before considered crossing. The Admiral guided Cortana backwards to the bed. The determination in his glare broke any thought of resistance, and she fell onto the mattress the moment the back of her knees touched it.

Lasky threw one of her legs up on his shoulder and within a moment he was inside her again, fucking her with slow deliberate thrusts. Cortana threw her head back, her mouth open in a wide O. It was a nice bit of vanilla after so much chocolate, and for a little while Cortana thought that was all it was. A slow palate cleanser before diving back into their shared delight of bondage. But then he spoke.

"I could send Chief on that mission," he said, almost quiet.

Cortana looked up at him, her heart stopping. "Send him on a mission tonight, just so that you could keep fucking his girl? That would be an incredible abuse of power, Admiral."

Lasky nodded, "It would be, but I don't care anymore. I want you more than I ever wanted anything."

"Fuck that's hot," she gasped, squeezing her breasts and looking up at Lasky with a newfound respect. "You would really go that far for me?" In its own twisted way what he was proposing sounded highly romantic. Cortana felt her heart flutter. John certainly wouldn't betray anyone's trust just to be with her.

"I'd do anything for you, Cortana," he answered, fucking her a little harder.

"But he's your hero."

"And your boyfriend."

"Fuck!" Her pussy spasmed. Cortana could already feel an orgasm building. A big one. "But the lab results. It'll be so dangerous without them…"

"Fuck them," He groaned. "I'll get someone else to do them. Doctor Anders. And I'll send Palmer with him. It'll be fine."

Cortana knew he was justifying his actions, but she didn't care. John would be safe with Commander Palmer, and she could keep fucking her new lover without guilt. "Harder, Thomas," she pleaded. "Harder so I can't think anymore. Please!"

And Lasky did just that. He gave her everything he had, sending Cortana to the stars, and flooding her eager pussy once more.

…

Revenge tasted rather sweet, or in this case salty as John came hard in Palmer's mouth. She swallowed and smiled up at her victim, still stroking his cock. "There," the beautiful Commander said. "That's payback for having me locked inside that armor disassembling rig."

John, who looked like he had been hit by a truck between the drama unfolding on screen and the A rank blowjob he had just received, stared down at her blankly. "You orchestrated all this?"

Palmer shrugged. "It's more like I just said the right things at the right time. Lasky has been acting like such a lovesick puppy lately, and I knew Cortana was enough of a slut to try and seduce him again if they managed to find each other alone. Still, this all worked out far better than I imagined."

She climbed up into John's lap, who still looked dumbstruck by all that had just occurred and brought her face close to his. "I also still have not fully forgiven you for choosing her over me. Sure, we still fuck, but that is not the same, is it? If Cortana is a little bit more busy than usual after this, then that means that you and I will have all sorts of quality time together."

She kissed his cheek and stood up, calmly putting her under suit back on. John was still left staring at the screen, his cock as stiff as before. Palmer clapped her hands to get his attention. "Alright Spartan. Enough feeling sorry for yourself. You heard the Admiral; we've got a mission to go do." She looked at the monitor and smirked. "Just as soon as he can leave Cortana's cunt long enough to officially give the order."

…

Cortana would be lying if she said that she did not feel at least a little guilty about everything that had just transpired. Just a little bit. A tiny amount.

That certainly did not stop her from quite literally skipping her way back to the room she shared with John. The scent of sex was heavy on her, and people stopped to stare at her as she skipped on by, their noses wrinkling. She did not pay them any mind and hummed to herself as she swiped the card for her room, half expecting a pair of strong and vengeful Spartan hands to pull her into the darkness. Instead, she was met with snores, and a large dark figure on the bed. Cortana smiled as she closed the door behind her. The mission must have been tiring, even more so since the Pelican ride back was apparently several hours long. She could only imagine what Commander Palmer had subjected her Spartan to during the long flight.

Slipping off her clothes, Cortana stealthily crawled into the bed and pulled the covers off John. Usually, any movement from her would have awakened John instantly, light sleeper that he was, but the Master Chief kept snoring away. She giggled again. Palmer really must of done a number on him. Finding his softened cock, she quickly kissed it back to life, causing John to stir. By the time his eyes opened she had already mounted him, moaning as his familiar girth penetrated her deliciously.

"Good morning," She greeted him brightly, bouncing slowly.

"You…" John growled, grabbing ahold of her hips. He looked angry, which just encouraged Cortana further.

"Me," Cortana said, smiling. "I heard from a little bird that you had a rough night."

"Thanks to you," John glared up at her. "How much did this bird tell you?"

"Oh, I've had Roland wrapped around my finger for quite a while. He told me enough." She saw a blush of shame appear on John's cheeks. Cortana pushed his hands off of her hips and took full control, playing with her tips and she continued to ride him. "We've always had an open relationship, but I never would of guessed that you liked to watch. Hmmm, this changes everything."

"This changes nothing," John said, the blush growing brighter.

"Oh, I think it does." Cortana bit her finger sexily. "How many times have I masturbated while watching you mount the Commander like a bitch in heat. Hmmm, and now you get to enjoy the same feeling. It's all very exciting."

She moaned and stretched, rotating her hips until John groaned underneath her. "And you are going to watch John. Every single second. Last night was the best sex I ever had. Hmmm, I never knew there were so many ways to tie a person up. It was exquisite."

John was helpless underneath her. All he could do was groan again in defeat and watch as his beautiful girlfriend rode his cock. "And what if I don't want you to see him again?"

"Tough luck," Cortana said bluntly. "There is no way I'm giving up sex that good. And Thomas? Well, I think he might be in love with me. He offered to transfer you off of Infinity permanently so we could be together."

John's face grew pale. "He did?"

"Yes," Cortana said, a cruel smile forming. "I will admit, the idea was way more tempting than I thought it would be. You came so close to losing me, John. It's not even funny. But I decided not to let you off that easy."

She started bouncing with enthusiasm now, her heart shaped ass slapping against his strong thighs. "You are going to watch, John. I have already been approved for a transfer to Lasky's office. I'm going to be his personal secretary. We'll fuck every day, and you're going to get to see him use all his toys on me. The collar. The ball gag. Everything. Me and him have so many kinks to explore with each other. So many twisted fantasies, and we're going to do them all. And you're going to watch all that footage right here in this room. Thomas is going to send you out on twice as many missions just so that we can fuck even longer. You're going to love it, John. I promise."

John seemed to agree. His body tensed at her words and Cortana knew well what was coming next. She jumped off of him suddenly so that she could finish him off with her hands. Jerking his cock furiously, John came quickly. No more than a dribble, but Cortana knew that could not be helped. His poor balls must have been drained already.

Satisfied with her evil deed, Cortana stood up, licking her fingers. John suddenly grabbed her arm and pulled her around to face him. "I'm going to get you back," He promised. "You and Palmer. I'll have my revenge."

"I look forward to it," Cortana said, licking the last of his cum off her palm. She blew him a kiss and skipped off to get a much-needed shower.

A.N.: So yeah, that happened. Let me tell you, six years ago I would have never touched a piece where Cortana cucks John like this. But my interests have broadened and become more flexible with age, and this is fanfiction after all. Cor though, as much as her's told me he likes Jortana, has been pushing for a piece to break these two apart ever since I wrote that second chapter. All that said, what did you all think? Cor wants to follow this up, not just with Lasky and Cortana, but as I said at the start there will be a bit of a through line with his pieces. If you have any suggestions, requests, ideas to get John and Cortana back together, or if you just want to share your thoughts on the chapter, please leave a review and we'll see you next chapter.