Author's Notes: This is part of my "Half-Vulcan Way of Life" series and is set about six months after Star Trek Beyond.

This story ignores the comic "After Darkness", because I was very unhappy with what that story did (except for the sweet backstory on Spock/Uhura). I mean, you're going to do a Pon Farr story without Spock wanting his canonical girlfriend? I refuse to accept this. I also found it very hard to believe Spock would engage in a serious, years long relationship with Uhura without considering the ramifications with T'Pring.

Chapter One: Bonds

When Nyota first began dating Spock, she had no idea what to expect from a physical relationship with a Vulcan. They were so measured in everything they did in public life. Was it unreasonable to think that it might extend to more private things? It had been a large worry for her at first. Nyota greatly enjoyed physical affection. While she and Spock were intellectually compatible, she wasn't sure if their differing physical needs would drive them apart.

As it turned out, this was a needless worry. Spock greatly enjoyed being tactile. If they were away from prying eyes, he loved to pull Nyota into his arms and nuzzle against her neck and shoulder. When the mood struck them to make love, he was as methodical as he was with any project he took on. He took endless amounts of pleasure finding new ways to bring her to climax.

Not long into their physical relationship, they were laying together, sweaty after their bout of love making and curled around each other. Nyota smiled and caressed the hand resting on her stomach. She decided to ask him about his affectionate nature. "Were you like this with your other girlfriends?"

Spock nuzzled against her ear. "I am afraid I do not have a large enough sample size to give you accurate data."

"And that means..." Nyota smiled, thinking she knew what Spock was saying.

Spock turned Nyota over to face him. He stared deep into her eyes, his dark gaze might seem cold to others, but Nyota could see the emotions simmering there. "Vulcans do not enter romantic relationships lightly. If you wish to know of my previous flirtations... I had a relationship with a cadet in my first year at the Academy. Leila. However, her desire for emotional fulfillment conflicted with my study of Kolinahr. I decided I was incompatible with a human mate."

Nyota crinkled her nose. "But I'm human."

Spock nodded slowly. "I had noticed that."

Slowly, Nyota crept her fingers up Spock's shoulder. "My desire for emotional fulfillment doesn't conflict with that?"

Spock snatched Nyota's hand from his shoulder. He brought it to his mouth and kissed each of her fingertips slowly. He then nuzzled into her palm. "Upon entering a relationship with you, I made the decision to stop my pursuit of Kolinahr."

Nyota felt her breath hitch. "Why would you do that?"

Dark eyes flitted up to meet hers. "When I calculated my compatibility with a human mate, I failed to include all variables."

Nyota's tongue darted out to lick her lips. "And what variables are those?"

"That the idea of purging myself of the emotions I felt for you was something I did not wish." Spock rose up and loomed over her. He cupped her face with one large hand. "I surmised that loving you was the only logical choice."

Nyota's heart swelled. It wasn't often Spock spoke of love. She didn't draw attention to it. She told him that she loved him frequently and she didn't want him to feel self-conscious about saying it himself. "So is it logical for a Vulcan to spend an hour between his girlfriend's thighs?"

Spock nipped at her neck, sliding his hand down her body to cup her ass. "It is remarkably logical. Having taken a human lover, I should obey human mating rituals. That entails a great amount of physical affection. You seem to enjoy what we do. Again, logic dictates I continue doing what will make my chosen partner content."

Nyota gave a small squeak as Spock's fingers drifted towards her sex. "So it's all for me. It's for my benefit that you plead with me in Vulcan to suck your dick."

Spock arched a brow. "I am most certain that phrase does not exist in Vulcan, Cadet Uhura. And logic dictates that a fulfilling sexual relationship be mutually satisfactory." He leaned in to kiss her. "Would you like to be mutually satisfied again?"

Nyota placed a finger to his lips. "You said you were incompatible with a human mate. You never tried with a Vulcan?"

Spock pulled back. He sat up against the headboard. Nyota could see his erection was flagging. "When I was seven, I had my marriage arranged. I was bonded to a girl named T'Pring. We were supposed to solidify our bond when we were old enough."

Nyota's eyes went wide. "You're supposed to get married to someone?" She felt the urge to cover herself up. "I'm in bed naked with someone who is supposed to marry someone else?"

Spock shook his head. "Nyota... When I made my intentions of a relationship to you clear, I contacted T'Pring. I told her I had found another I wished to bond with. She had also found another mate, so it was logical we end our engagement. I would never have pursued you had that not been the case."

Nyota relaxed. She coyly took hold of Spock's hand and began to massage it. He let out a small whine. She bowed her head and sucked on his index finger. "You want to bond with me?"

"I told you... Vulcans do not enter relationships lightly." Spock leaned in and whispered something else into Nyota's ear.

Nyota released his finger with a pop. "See, I knew there was a way to say it in Vulcan."

SEVERAL YEARS LATER

Nyota hadn't expected it. Spock had honestly been avoiding her of late. There was something going on with him He seemed restless... Jittery. He went from project to project, doing anything he could to avoid coming home. She wondered if it was something she had done. She also noticed him being very rough with the crew. In fact, he acted downright angry. It was a disquieting thing to see on him. She hoped maybe it was just nerves over their next mission.

She had been at the conn all day. Spock was supposed to be working with the Captain on the mission to Altair VI. But as soon as she stepped in the door, she felt heated arms around her.

"You took too long," Spock panted in her ear, rasping his teeth against the lobe. His hands were already grasping at her skirt, tugging it up.

She pushed her skirt back down. "Honey, what are you doing?" She turned to face him. He was wearing meditation robes. "Why are you wearing meditation robes?"

He raised an eyebrow. "Because I was meditating." His large hands gripped her ass, pulling her towards him. He could feel the hard brand of his erection pressing into her stomach. "I was unsuccessful. All I could think about was laying you down on our bed, your breasts heaving, your thighs trembling..." A hand slipped down to slide under her panties, lightly stroking the folds of her sex. "As you beg me to thrust into your warm, wet cunt."

"Spock!" Nyota gasped. She had never heard that word from him before. It was not unwelcome. She'd tried to get him to talk dirty to her before and it was one of the very few things he was unable to accomplish, even with extensive study. It just went too far out of his nature. "What is going on? You've been acting strange lately and now... Now this? I didn't think you wanted me."

"The opposite," Spock groaned. He ground himself against her. He rumbled low in his throat. "I wanted you so much. I need to stay away. I needed... I needed... To stay away... But now I know this is what I really need. Give me what I need."

He was fingering her with one hand, his other toying with her ass cheeks. He growled into her ear. He bit her neck, harder than his usual nips. "You're so wet for me already, K'diwa. Is your pussy hungry for my cock? I need to be inside you. Give yourself to me. Let me have you. Let me taste you and pleasure you."

Nyota moaned, pressing back against Spock's hands. Her desire for him was rising. "Honey, you're trembling."

"With need for you, K'diwa . I need to fuck you. Please let me fuck you." His breath was hot against her neck. "Tell me to fuck you, Nyota."

"Fuck me, Spock," Nyota whined, enjoying how needy Spock was. As passionate as he could be, there was always something reserved about him. He seemed unhinged, mad with lust. It was intriguing to see him need her so badly.

His hands went to her hips and lifted her up easily. He carried her to their bed, throwing her down with a roughness he'd never shown before. Nyota watched him strip out of his robes. Normally Spock was methodical about removing his clothing, folding them and immediately putting them away. Now, they were just abandoned on the floor.

He pumped his shaft roughly in his fist, the head of his cock a dark green, a pearl of precum welling from the tip. "Why are you still dressed?" His voice came out a hiss.

Nyota sat up to unzip her dress, but she was moving too slow for Spock. He grabbed the front of her uniform and shredded it in his hands. It lay open, framing her now naked body.

She didn't have a moment to think about the state of her uniform before Spock was on top of her. He kissed with hunger like Nyota had never experienced before, from him or any other person. He licked and nipped at her mouth, his hands raking over her body.

One hand went to her face, pressing to her cheek. Nyota arched up towards Spock, screaming out as her mind was flooded with lust and need. "Spock!"

She was not ready for the connection. She would have welcomed it, but it had happened so quickly. They had melded before while they made love, but this was different. This was not the sharing of their emotions or thoughts. This was a connection of pure, unadulterated lust pulsing into her. Spock thrust into her, branding her with his steely shaft. His hips snapped hard against her. Both Spock's body and mind were deeper inside of her than ever before.

He panted above her, his dark eyes wide with ardour. His hair was tousled, his face green with blush. His body was so hot, almost too hot for her to touch. She couldn't touch him even if she wanted to. He was caging her hands above her head with one solid hand.

Spock's movements were jerky and desperate, surging into her roughly. Nyota could do nothing but allow Spock to drag her along with him, their link filling her with his pleasure as much as her own. He bowed his head, lavishing her breasts with rough attention, making Nyota sob in pleasure as his mouth bit at her sensitive nipples.

As Spock howled his orgasm, Nyota cried out her own. Was it her own or was it the echo of his? For all of his promises of seduction, Spock had done very little to manipulate her. He'd been greedy and selfish in a way he had never been before.

Spock's body fell heavily against her. "I'm sorry..." He murmured, his body wracking with his panting. "I'm sorry..."

He withdrew from her, looking down at her with wide eyes. He took in a shuddering breath. "Nyota, I..."

"Spock, what's going on?"

"I didn't mean to hurt you..." Spock murmured, standing up. He stumbled to the closet, grabbing his uniform and sliding on a pair of pants. He still clutched his tunic in his shaking hands. "I'll leave you alone."

"Spock!" He never left her abruptly after they made love.

No, they didn't make love. He had fucked her.

Spock backed up, his look of horror not abating. Nyota started to stand, but felt a cramp from the rough use of her body. She sank back onto the bed. Her hair had fallen out of its ponytail and framed her face. Her uniform remained in tatters, hanging off of her. The confusion of their coupling left her frozen on the bed, just watching as Spock fled from the room without another word.

Nyota pressed a hand to her cheek, where Spock's fingers had held her, linked them together. Her heart was pounding. That pounding just seemed to grow. She wanted to run after him. She needed to be with him. Despite her pain, she felt a heat growing between her thighs that had not been alleviated.