Undercovers Chapter 23

A/N: Odd numbered chapters are POST-CASE, even numbered chapters are the undercover CASE. NSFW, smut ahead, read at your own discretion, this is nothing but heavy smut, you've been cautioned, enjoy. Happy President's Day long weekend to any American readers, and happy Family Day long weekend to my fellow Canadians. Stay safe!

A/N2: I updated this the day after I posted Ch22 so make sure you read that first. Cheers.

Sunday Night/Early Monday Morning, Olivia's Apartment, Post-Case

Elliot caught Olivia in his arms, he smiled as he heard her laugh. He'd never seen her so carefree in her life, he loved seeing her smile. "You promise we'll disclose?"

Olivia nodded playfully, "Pinky."

Elliot grinned wrapping his finger around hers and kissing his hand as she did too.

He picked her up and pinned her against the wall, their naked bodies sliding against each other, he groaned as he felt her hard nipples against his pecs.

Olivia moaned, his strength had always turned her on. She never liked it with other men, perhaps she didn't trust that she could defend herself if she needed to, but with Elliot she trusted him implicitly and it led to her being able to let go. She loved how he could manipulate her body any way he wanted. He had her against the wall, her long legs wrapped around his hips, hands gripping and squeezing her firm butt cheeks.

"You are so sexy," Elliot murmured against her lips.

"Mmmm, so are you," Olivia repeated, wrapping her arms around Elliot's thick neck. She ran her hands through his short hair, scratching her nails along the back of his head.

Elliot practically purred in response, "The things you do to me Liv."

"The things I want to do to you," Olivia whispered in his ear.

Elliot groaned, bucking his hips against her warm, wet core, he could feel his cock getting hard again, even though they had just had sex in her living room. It wasn't a big deal when he was younger, a hard breeze could arouse him, but it took him much longer to recover in his 40s.

"I want you so badly, all the time, I can't tell you all the places I've fantasized about you," Elliot rasped, nipping at her jugular.

Olivia moaned, his words sending a rush of heat to her core. She was soaking, she could feel the buildup of moisture between her parted thighs, after what they did in her living room, she didn't know if she'd ever been so wet before in her life.

Elliot rocked his hips against hers again, his semi hard shaft slid through her wetness. She was so slick. "God you're so wet, I can't get any friction against you."

Olivia gasped, the feeling was right between pleasure and pain. He was right, the pressure wasn't enough though, he wouldn't be able to make her cum again from this alone.

"Let me clean you up," Elliot stated before lowering her to her feet and dropping to his knees.

"Oh God," Olivia gaped, seeing her partner kneeling on her bedroom floor in front of her.

Elliot grinned and grabbed one of her thighs, placing it on his shoulder.

Her core was eye level with his head, all he could see was her engorged clit, her juices covering her swollen lips, and inner thighs. "Fuck me," he whispered. She was beautiful everywhere. Her core was glistening, and clearly flushed from her arousal. He held her hip against the wall with one hand and parted her lips with his other.

"Mmmm," he hummed. He moved two fingers up and down her folds, spreading her moisture even further. With her thigh on his shoulder she was spread open for him. He could see her tight entrance pucker and clench around empty air as he brushed her clit.

He smiled, he loved seeing her body's reaction to his ministrations. He trailed his wet fingers down to her opening, listening to her audible gasps and heavy panting above his head. He ran a finger around the tight tissue, dipping in just the slightest bit before pulling out again and taking a bold chance, he moved his fingers lower, spreading her liquid heat to her tight little rose bud between her butt cheeks.

He heard her choke in her breath and gasp his name.

"Have you ever?" He inquired as he slid his hand back to her entrance, seeing it clench again.

"Nuh-no…" she gasped breathlessly above him.

Elliot patted her butt, and leaned in to kiss her mound right above her clit.

"Me neither," he moaned into her navel. "But I've fantasized about it with you," he declared.

"Elliot pl-please, more," Olivia bucked against his face, she could feel his breath against her throbbing bundle of nerves. She thought this was payback for the stunt she pulled in the living room.

"Mmmm, wo-would you?" Elliot asked as he lifted her other leg causing her to gasp and grab him by the back of his head and neck for balance.

Olivia nodded, "Ye-yes, wi-with you, only with you."

That's all Elliot needed to hear, he had no intention of filling that desire at the moment though, no, his attention was elsewhere as he removed his hands from her thighs, relying on his shoulders to support her weight and placed them instead on her inner thighs.

He pushed against them, prying them away from the firm grasp they had on his ears, spreading her legs even further apart on his broad shoulders.

Elliot moved his left hand to her lips and with a couple fingers, held her wide open. Finally leaning in he opened his mouth and with one broad stroke of his tongue licked her from her opening to the top of her clit.

He heard her gasp and felt her hips jolt, he chuckled at her response, knowing the vibrations would drive her wild.

Elliot moved his mouth to the inside of her thigh and cleaned up the moisture that had gathered on her inner leg. He closed his eyes and moaned, sucking the skin into his mouth. He knew he was marking her but she tasted so good on his tongue. He couldn't get enough of her heady scent and taste.

Elliot slid his mouth to her other thigh, and repeated the process, biting her lightly.

Olivia moaned above him, then he felt her grip change on the back of his head, and his face was being directed back to her dripping core.

He could see the juices leaving her tight entrance and obeying her wordless command he opened his mouth and gathered the moisture on his tongue.

"Mmmm," he moaned against her mound.

Elliot slid his tongue between her parted lips, licking up any wetness in his path, as he made his way up towards her clit. Not quite satisfied yet he surprised her again by sucking each of her folds into his mouth, swiping his tongue along each one, making sure to get all the juices he could, before letting it slip slowly from his mouth. He was staring up at her as he did this, her pupils blown wide open as she watched him, mouth hanging open in astonishment.

He knew he had little experience going down on a woman and prior to this encounter he had assumed it was all about her vagina, maybe her clit, but no, it seemed she could get pleasure from him touching or licking all over her core, not just her main pleasure centres.

Finally happy with 'cleaning' her up, Elliot stuck out his tongue and flicked her clit with it.

He swore he could see it pulsating right in front of his eyes. Olivia's legs clamped around his ears again and he moved a hand to spread her and hold her in place against the wall, he wanted her wide open for his viewing pleasure, and her legs spread so his ears didn't miss a single gasp, groan or moan. He was going to earn those.

Elliot covered the little bundle with his lips, suckling slightly, and moving his other hand that was holding her lips open, to her entrance. He could feel the moisture building up again as he pushed one finger past her squishy entrance, seeing it enveloped by her warm wet tunnel.

He pulled out while keeping his suckling at a steady rate, and pushed back in, this time with two fingers. Her walls clenched the moment he was two knuckles deep. He wanted to find that spot again, the spot that had her tumbling over the edge the first time he did this to her.

He twisted his fingers, and rubbed against the front wall of her core, he knew he found it when she jerked and cried out.

Elliot slipped his fingers in and out, trying to hit that mark each time, he sucked harder on her clit, sliding his tongue harder against her, just off centre. Olivia was rocking precariously on his shoulders to the rhythm of his fingers.

He felt her orgasm before he saw or heard it. Her warm wet tunnel clamped down hard on his fingers almost forcing them out, and his palm was met with a new wave of moisture he'd never experienced before. He looked up to see her mouth hanging open in a silent scream. Her eyes were wide as saucers, her body shaking uncontrollably on top of his.

He moved one hand to wrap around her thigh, unsure if she'd be able to keep her balance through her climax. He continued to suck on her pleasure button, unable to stop himself, she tasted so good.

Olivia thrashed and bucked against his face as she rode out her orgasm. Her nails were digging heavily into his neck and the back of his head. He knew he'd have scratch marks tomorrow.

She finally found her voice through her haze of pleasure, "Nuh-no-no more pluh-please, ca-can't," she tried to plead with him.

Elliot eased the motion of his mouth, letting her clit slip from his lips at last. He slowly pulled his slick fingers from her tunnel. They were both panting loudly he noticed.

He groaned as he sucked his fingers into his mouth. He leaned in with the intention of cleaning her up again when he felt a hand smack against his forehead and hold his mouth inches from her core and his intended target. He thought he could lick her entrance if he stuck out his tongue, and just as he opened his mouth to do so he heard, "Don't you dare, too-too much El."

Elliot looked up and smiled at her, stroking her thigh with his thumb, "But you taste so good."

Olivia grinned, still breathing heavily, but shook her head, "Shower, that's why I care in here in the first place."

Elliot quirked an eyebrow, he slowly lowered one of her long tanned legs to the floor, making sure she could bare her own weight, before doing the same with the other. He had been kneeling on the floor for quite some time and his knees protested the position as he tried to stand, using the wall behind her to push himself up.

It hadn't been long since they had sex in her living room on the coffee table, but eating her out had definitely refreshed his own libido. He was erect again something they both couldn't help noticing as he leaned his warm sweaty body against hers, wrapping his arms around her waist, his hands falling to her ass.

"God, I thought men your age were suppose to take hours before they could go again," Olivia rasped against his lips, still catching her breath.

"Mmhm, that is very true, this is what you do to me," Elliot revealed.

Olivia smiled shyly and pecked his lips. She had meant for it to be a quick kiss but the moment she made contact she could smell and taste her own arousal covering his mouth and chin.

"Fuck," she murmured sucking his bottom lip into her mouth before letting it go with a pop. "Now you're the one who needs cleaning up," she declared.

Olivia grabbed his hand and pulled him into her bathroom before letting go to start her shower.

Elliot admired her strong back muscles as he rubbed his fingers over his mouth and chin, swiping up any remaining moisture and licking it from his fingers before the shower could wash it away. Olivia turned to look at him when he groaned, seeing what he did made her moan and clench her thighs together. The man could turn her on just by looking at her from across their desks. What he was doing now was just unfair.

Needing to break away from his stare she stepped into her warm shower, the water immediately soaking her hair as she stood underneath and waited for her partner to join her.

Elliot didn't waste anytime and walked in next to her, closing the half see through door behind him. The bottom part of her shower was tiled while the top half was clear glass. If anyone walked in while he was showering they'd be able to see his chest and abdomen but not his lower half.

Olivia moved allowing Elliot to step under the spray, the water bouncing off him and hitting her as she reached for her body wash.

"Hope you don't mind smelling like me tonight," she teased.

Elliot smiled at her, reaching out and grasping her hips, "You smell amazing, every single part of you," he replied slyly before dipping his eyes down to her bare core hoping she got the message.

Olivia laughed, "Down boy I'm not quite ready for another round."

"Turn around," Olivia ordered.

She spread her hands across his strong upper back, kneeding and massaging his muscles as she rubbed the soap into his skin. Truthfully she was kind of tired, that orgasm he gave her was one of the strongest she had ever had. She had never cum so hard and released that much fluid before.

Olivia was lost in thought as she moved her hands lower and lower down his muscular back, getting to his firm butt cheeks.

"God Liv, I wished you were the one giving me the massage at that spa that day," Elliot moaned.

Olivia smiled as she moved her hands down, and slid the soap around his hard ass. He had dimples on either side of each cheek. She couldn't help but admire his butt. She thought he might have the best ass of any man she knew. She didn't want to objectify him, but his body really was a work of art especially for a man his age. She knew it wasn't just God's work though, he worked out a lot, it had increased significantly since his separation and divorce, and he was much bigger than he was earlier in their partnership. She assumed he was taking his frustrations at the world out in his exercises. Maybe now he could take those frustrations out on her instead.

Olivia squeezed each cheek in her hands, rubbing the soap all over, before repeating the move he had pulled in her bedroom, and trailing a couple fingers down his crack, pausing at his clenched hole.

She saw him smack both arms against her tiled wall and gasp loudly under the shower head.

She teased his puckered hole slightly before retreating back up. She palmed his ass one more time before reaching for more soap and applying it to his chest. She was sorely tempted to slap his ass, or better yet bite him. Something primal inside of her wanted to see her teeth marks on every inch of his body. Is this what possessive men felt like? She didn't want anybody else flirting with him. She wanted every random lab tech to know he was very taken.

She stepped into his body, her hard nipples pressing into his back, "You okay?" she inquired, rubbing her core against his ass and her hard pebbles nipples against his back, groaning slightly at the unexpected pleasure it brought her.

She watched him nod, as his breathing picked up. She placed her chin on his shoulder before turning her head and attaching her lips to his throat. She bit down on the strong cord that ran from his throat to his shoulder as she rubbed the soap into his strong pecs, marking him the same way she was sure he marked her inner thighs.

Olivia flicked his nipples with her thumbs and slid her hands down the chiseled crevices on his abdomen.

She could feel his ribs expanding and shrinking more quickly the further she moved down his firm body.

She slipped her hands over his hips and ran her fingers along the deep 'V' that led to his shaft.

Using her soapy hands she grasped his hard length, her first fist unable to close around his base while the second didn't quite meet his head, the very tip sticking out.

Elliot keened and bucked, his cock sliding between her fingers. It didn't take long for Elliot to work up a rhythm as she pulled and twisted her hands on his solid flesh. She swiped at his tip, feeling a different kind of moisture and moved her other hand down to cup his balls.

Elliot gasped and swore, repeating her name over and over, "Fuckin' fuck, shit, Li-Liv, Liv, Liv, Liv, Livvvvvvv, ah harder, harder, fuck." He was so primed from her bedroom she knew it wouldn't take much to make him cum again. But she didn't want him to finish in her hand this time.

She let go of his throbbing hard-on, ignoring his groan of disappointment and grabbed him by his hips getting him to turn around.

His warm wet chest slid against hers, the water hitting his back shielding her from the direct spray, and washing the suds down his body, she stared into his dark blue eyes and slowly lowered herself to her knees making sure to keep her body against his the entire way down.

His pupils dilated even further, his mouth hung agape, as his shaft slid between her breasts before bumping the underside of her chin.

Elliot moaned this was every dream and fantasy he had ever experienced, come to life, "Yo-you don't have to," he tried to speak out and be chivalrous.

Olivia smiled, "Oh I know I don't have to, I want to."

Elliot leaned his hands against the wall behind him, he knew he would blow the minute she touched him. Just the visual of her on her knees, soaking wet, had him ready to cum.

Olivia sensed he didn't have much time left before he gave in to his climax, so she grasped him with one hand again at his base, the other on his hip, as she leaned forward and swirled her tongue around his tip, staring up at him with her big brown doe eyes.

Elliot groaned feeling her tongue on his sensitive head. "Unghhhhh, Oli-liv-via!" he exclaimed, stuttering out every syllable of her name.

Olivia grabbed one of his hands, and placed it on the back of her head, then she did the same with his other hand.

Elliot moaned, he knew she was trying to make his fantasy come to life.

Olivia finally closed her lips around his tip, and groaned, letting the vibrations work wonders against him too.

Elliot gasped, unable to stop his hips from jerking, he moved his hands from the back of her head to the sides of her face. Despite the act they were partaking in, he smoothed his thumbs against her cheeks making the moment far more intimate than it ever was for her before.

She didn't often go down on her dates anymore, but it was an activity she perfected in her younger years.

Looking up into Elliot's eyes she saw nothing but love as he stared down at her mouth agape. His whole body was shaking and she knew he was going to cum.

He shook his head as she sunk lower on his shaft, "Gonna cu-cum," he tried to warn her and push her mouth off his dick.

Olivia grabbed him by his firm butt cheeks and pulled him forward, his cock slipping further down her throat, she hummed, as she felt him twitch and pulse before he swore loudly above her, and slapped her wall.

He was spirting over and over again, his hips bucking uncontrollably against her as he came, he cried out unable to hold it in, "Olivia!" he had never heard his voice hit that octave before.

Olivia continued to squeeze his ass as she swallowed his seed.

When he finally stopped cumming, Olivia slowly slid her mouth off of his warm flesh, letting his soft shaft slip from her plump lips, but not before circling his bulbous head one last time.

She grabbed his hips and pushed herself up onto her feet. His arms were propped against her shower walls, his whole body was trembling.

Olivia rubbed her hands over his stomach and up his chest to his neck. She nuzzled him and placed a kiss on his cheek, "You good?"

Elliot tried to chuckle but couldn't catch his breath, "Okay, fuck Benson, after that performance I'll never be good again. I don't know how the hell I'll ever be able to look you in the eyes again at work without picturing this moment."

Olivia grinned, "It was to your satisfactory then? I thought I should reciprocate after the orgasm you gave me in my bedroom. And here I thought you were inexperienced in that department."

"Oh I am, I promise, your body just responded so enthusiastically, I just went with my instincts," Elliot rushed out, still trying to breathe normally again.

"Mmmm well," Olivia replied wrapping her body firmly around his, "I have been thankful for those instincts for the past 8 years, never thought it'd be in this context though," she joked.

Elliot moved his hands letting them hang around her hips, against her ass.

"Fuck you're amazing."

"Well I think we're both sufficiently 'clean', want to head to bed before we're both prunes?"

Elliot smiled at her and nodded. They took turns quickly rinsing under the water. Elliot stepped out first and grabbed a clean towel wrapping it around his waist. He got another towel and when she left the shower he repeated the process, wrapping it around her waist too.

Olivia raised an eyebrow as she looked down at the towel and then into his eyes, "This isn't how women normally wear a towel Elliot," Olivia told him as she used another towel to wring out her long wet hair.

"It isn't?" Elliot questioned pretending not to notice the problem. "Seems natural to me," he grinned, he found it very sexy to see her standing in front of him water dripping down her torso with a towel wrapped around her hips. Water droplets rolled off her hair down her heavy breasts.

Olivia rolled her eyes, "Do you need a toothbrush?"

Elliot nodded as they moved to her sink. She opened her medicine cabinet and took out a new toothbrush. She handed it to him as they stood at her vanity, looking at each other in her mirror. She never in her life thought brushing her teeth could be sexy but with the way he was looking at her, she could feel her nipples getting hard again.

She blushed and saw his eyes which had only been on her face dip down to her chest. She watched him smile before his eyes moved back up reconnecting with hers. Crisp blue met warm mahogany through her mirror, lust still simmering in both. They couldn't get enough of each other since discovering their mutual sexual compatibility.

They both finished brushing their teeth, Elliot placed his toothbrush in the same holder as hers making her smile as he moved to stand behind her. He placed a hand on her waist, the other moving her hair to one side.

"You're so beautiful, I don't tell you that enough," he said in a deep tone.

"El-don't," Olivia could feel the blush creeping down her chest.

"Don't what?" Elliot asked rubbing her waist with both hands, he moved them up slightly so he was holding her ribs just under her breasts.

"Don't get me going again," she moaned, closing her eyes. It was one thing to experience his hands on her body but to physically see them was a different story.

"Hmmm, I dunno I might be too tired after what you did to me in the shower to get you off again Benson."

Olivia groaned, "Even more of a reason for you to stop then."

Elliot shook his head, kissing the side of her jaw, "Lose the towel Liv," he commanded moving his hands and cupping the bottom of her heaving breasts, her proud pointed tips on full display for both their eyes in the mirror.

Olivia couldn't believe how turned on again she was by watching him in the mirror. She reached down and tugged the towel, letting it drop at her feet.

Elliot kicked her legs further apart, her hip bones pressing against her vanity, she knew it'd be another set of bruises that she'd secretly love having tomorrow.

"Touch yourself for me," Elliot whispered in a low voice into her ear.

Olivia gasped, looking into his eyes in the mirror. The same eyes that were gazing into hers, penetrating her very soul. She had never done that in front of another person before.

Elliot could instantly read the hesitation in her eyes, "Slide your hand down your body, circle your throbbing clit, and slowly ease your fingers into your juices," he purred in her ear, pulling it into his mouth.

"Ahh," Olivia groaned, she thought his words alone might be able to get her off, he was certainly getting better with his dirty talk. She also couldn't deny his take charge attitude was turning her on more and more.

She looked into his eyes and slowly began to follow his command, watching his eyes follow her hand in the mirror as it trailed lower. She parted her lips with her fingers and groaned when she came into contact with her bundle of nerves and wet heat.

She was staring at his face while his eyes were transfixed on her hand. She reached down to give them both a better view and with her spare hand she held herself open, while she slipped two digits into her welcoming tunnel.

Elliot whined behind her and moved his hands to fully cup her plump breasts. He swiped his thumbs over her hard swollen nipples, then grasped them with his forefingers. He squeezed and pulled sending pleasure shooting from the tips of her sensitive breasts to her core.

She ground her palm harder against her clit and pumped her fingers faster, rocketing towards a quick but strong climax.

"El, oh fuck Elliot, yesssss, she moaned tipping her head back to rest against his shoulder, hoping his body could support hers as her knees began to shake.

Elliot groaned, "That's it, fuck yourself harder, that's it Detective Benson."

Olivia whimpered, that did it, she didn't know what kind of weird kink that was but hearing him call her by her title sent her over the edge. Elliot continued to stimulate her breasts as Olivia rode out her orgasm against her palm and fingers.

"Unghhhhhhh, Elliottttt, yes fuck Elliot oh!" she cried out as Elliot kissed her neck and cheek.

"So sexy," he exclaimed near her ear, watching her climax in the mirror, the way she screamed his name as she stared into his eyes, would be imprinted on his brain forever.

Olivia removed her hands from her body, leaning forward and resting on her vanity, unable to support herself any longer on her shaky legs as the aftershocks from her climax shot through her.

Elliot groaned, "God Liv, you have no idea how hot that was."

"Mmmm," Olivia murmured, she felt far too tired to even respond properly.

Elliot grinned at her slumped over form, if he wasn't so tired… the position she was in would have had him harder than a steel pipe getting ready to rock into her from behind. Even as she was he could feel his flaccid penis beginning to stir at the sight of her swollen pussy from behind.

Elliot's eyes met hers again in the mirror only to see her watching him with narrowed eyes, "Don't even think about it," she warned.

Elliot grinned, "Then get your sexy ass into that bed so that I don't get any more ideas tonight."

Olivia laughed, "Let me use the bathroom, I'll meet you there."

Elliot smiled and turned her around, kissing her lightly. She slapped his ass, breaking the kiss, "Out."

Elliot raised his hands in surrender, and exited the bathroom, closing the door for her behind him.

He walked over to her bed and ditched his towel on the floor before he slid into her cool soft bed.

Elliot smiled when she opened her bathroom door five minutes later wrapped in a robe.

He quirked an eyebrow as he raised the sheets for her to get in, "Off," he commanded.

Olivia looked at his naked body under her sheets and shook her head, "You sure, I'm tired and I need my sleep, I saw the way you were eyeing me in the bathroom, you sure I can trust you to keep your hands, tongue and other organ to yourself?"

Elliot smiled, "Maybe? Guess that's just a risk you're gonna have to take partner."

Olivia grinned, "No funny business for at least five hours," she replied while letting the robe slip down her body. It was already way past midnight and they had to work in the morning.

Elliot gulped as her toned fit golden body came into view once again. He didn't think he'd ever get use to seeing her naked. "'Kay," he agreed whispering, it was barely audible to his own ears.

Olivia chuckled getting into bed and turning the light off on her bedside table.

"Goodnight El, do try to get some sleep, I need my partner to be able to function at work tomorrow."

Elliot pulled Olivia into his arms, laying on his back, until she was half on top of him, her head resting against his chest over his heart. He knew they'd both be asleep in minutes, their mutual orgasms soaking up the last of their energy.

"Night Liv," he spoke softly into the darkness.

"Mmmm, sweet dreams El," he felt her reply against the skin of his chest as he quickly slipped into unconsciousness.

A/N: Whew! More of their thoughts during the case and what happened on the assignment in the next chapter. Shameless plug but if you like smut and the idea of a middle aged Olivia and a mid twenty Elliot, working together as Captain and her young detective, who pursues her, and allows her to teach him some new things in the squad room and the bedroom, then check out my new story Protégé. If you liked or didn't like or have any suggestions, leave a review, they're a great distraction for me. No beta, all mistakes mine.