A/N: Hi there! I hope all my lovely readers are having a great week so far :) Forgive me if this isn't good, I'm a little rusty with smut. I'll appreciate your feedback!

Huge thanks to my beta quesera1 for editing and moral support and for just being an awesome human being.

Prompt #34: Boxing - "I'm pretty sure that doesn't qualify as boxing anymore," she teased with a mischievous grin.

Word count: 1,223

"Give me one more. That's it. Nice!" Even though this is purely for practice purposes, Jay can't help but get distracted by the muscles on her legs every time she gives him a high kick. He's pretty sure he's been literally ogling her for the past couple of minutes, and so have all the other guys in Antonio's gym. With one pivotal difference—Jay gets to go home with her.

He knows with perfect clarity what it's like to have every inch of Erin's toned legs wrapped around him. And they may see the shape of her perfect glutes through the workout clothes, but he's the one who knows what's underneath. That knowledge was the only thing keeping him from throwing punches at people for the hungry glances they were sending in his girlfriend's direction.

All of the sudden, she tries to attack, and his absent-mindedness nearly costs him his badass reputation. But his quick reflexes allow him to pin her to the floor of the ring instead.

"Nice try," he tells her when she offers him a sheepish smile.

"I'm not sure this still counts as boxing." Erin wiggles her eyebrows up at him. She is painfully aware of the drops of sweat trickling down his neck, and of his knee positioned between her legs in a way that is making her swallow. Lately, it seems his presence is all it takes for her to get going.

And judging from his cocky expression, he is well aware of it too.

"Then maybe we should call it a day," he rasps in her ear, lowering his head to get even closer to her. Since people are starting to stare, he gets up on his feet, offering her a hand. She takes it, and he pulls her off the floor.

"I'm gonna take a shower," she murmurs to him, as she gets her towel from her bag. Throwing him a disarming look, she walks away, leaving him to stare after her for a minute.

"How about we save water?" When he joins her, she has already gotten rid of her leggings and shoes. As he steps into the stall, her lips crash against his almost immediately—her hands already peeling off his sweaty workout attire without losing precious time.

Jay lets out a soft groan when her lithe body presses against his. She tastes like salt and morning coffee, and he realizes she could taste of whatever, and it would still be his favourite taste.

"You little minx," he accuses, helping her pull off the sports bra. He fills his hands with her curves—the soft skin of her breasts is slightly damp from her workout and provides a startling contrast to his calloused hands. Erin responds with a breathy moan, discarding the rest of her clothes, before finally turning on the water. They step under the stream, letting the hot water wash them clean.

"You're the one who started this," she retorts, even though she doesn't mind starting her day with hot shower sex. Not at all.

Her back hits the cold tiles of the shower as his hands soften the landing. Smiling up at him, she locks her arms around his neck, pulling him closer. They pause briefly, just taking each other in, before diving in like they are each other's oxygen.

Erin reaches for the soap and starts washing his chest first, lathering up his torso before moving down. He lets her have her fun until she reaches too far down. Then his breathing intensifies and his hand takes a hold of hers to stop her.

"We are going to be so late for work," he says, swiftly turning her around, so her back is facing him. The soap lands on the shower floor with a loud thud, as he tugs on her hair to gain access to her neck. He loves sucking on the soft skin just waiting for his mouth, almost forgetting that Erin is going to kill him if he leaves another hickey. His palms cup her breast, teasing the sensitive skin until she whimpers.

"So late," she agrees, biting her bottom lip in anticipation. His erection presses against her back, before slipping between her thighs, so close to where she wants it—aches for it really—for the pleasure she knows is coming. Every touch of his only serves as a reminder.

It has been a busy couple of weeks, and they haven't clocked in as many bedroom hours, as they would have wished. Sometimes a case keeps them so busy, they barely have time to eat or sleep. The lack has left Erin needy and impatient, which, as always, brings out his teasing side.

He doesn't thrust in all at once, instead prolonging the moment by sliding into her, inch by inch, until she's squirming underneath him, cursing him in a low voice. It's probably a good thing that she can't see his smug smile.

"Please," she manages in a soft voice, bracing herself against the tiles. Finally, he thrusts all the way in with ease, his move filled with a hunger mirroring her own.

His hand pins both of hers against the wall above their heads, as he starts moving slowly. At the feeling of being buried deep inside of her, he groans in her ear, while slipping his other hand between her legs to rub her clit.

"Fuck, Jay." She tries to keep it low, but there is no stopping the moan when he presses her body against the cold tiles, picking up his pace. The only thing keeping her from collapsing as he pushes her over the edge are his arms holding her up.

The days of wanting only intensify the pleasure as she leans back against him, enjoying one of the best orgasms she's had in a while. The sole purpose of their exercise was to alleviate some tension the case has left behind, but ironically enough, sex was the answer all along.

His breaths become shorter, faster, and so do his thrusts. Her low groan is what ultimately pushes him over as well. They just stand there—him still deep inside of her—while they regain the ability to breathe and move. The water still pours down on them as he finally pulls out, and she turns to touch his chest gently.

The vulnerable moment is interrupted by the sound of footsteps. They smile at each other knowingly. If anyone would have walked in moments ago, they would have been caught in the act, because there was no way either of them could have stopped—not even for a pretence of civility.

Jay picks up the soap Erin dropped before and returns the favour of lathering her skin. Their lips meet in a sloppy kiss, but one lacking the earlier intensity.

"At least now I'll be able to focus on work," she comments, as they get dressed.

"Thank god. Maybe now you can stop devouring me with your eyes across the bullpen. I think people are starting to notice."

"Me? You are the one who can't keep your hands to yourself."

"Guilty as charged," he teases. "What are you going to do, officer? Arrest me?"

"Maybe."

They continue their sexually charged bickering all the way to the precinct, as they walk in late for work, but all the happier for it.