Jennifer Jareau was not a virgin. She was quiet, sweet, and unfailingly polite and did not feel the need to advertise her exploits, but she'd also been around the block a time or two. Well, really just around the corner, she supposed, but that expression didn't make it sound nearly as impressive. It wasn't like she'd slept with everyone she met, just a select few. A couple, really. Two past boyfriends and her current girlfriend. So yeah, she was indisputably not a virgin. And she loved sex, really – just thinking about her girlfriend settling in between her legs, digging her heels into her back, raising her hips in time to meet the thrust of her tongue – let's just say it didn't take much to get JJ hot and bothered.

Watching Emily come undone under her touch was one of JJ's favorite things, and she didn't think her girlfriend could ever be more beautiful than when her face was crumpled in ecstasy, her whole body stiff and shaking, quivering around JJ's fingers with her name on her lips. Allowing JJ to be present for those moments – to be the cause of those moments – was one of the most amazing gifts Emily could ever give her. JJ didn't think she was ridiculous to hope to return the favor.

So although virginal wasn't a word one could use to accurately describe JJ's condition, it would be completely fair to say that Jennifer Jareau had never had an orgasm. Never alone, never with those two past boyfriends (she likes to think she understands why, now that she's been intimate with someone with decidedly different anatomy), and never with Emily. And she wanted to with Emily, so badly. Wanted to give her that gift, let her be the one she trusts enough to catch her when she finally goes flying over the edge for that first time. Lord knows she's tried.

It bothers Emily. She'd never admit it, of course, but JJ knows it does. Emily's the kind of woman who likes to prove she's the best at everything, and won't take no for an answer until she has. That's the kind of attitude that doesn't exactly mesh well when she's incapable of getting her girlfriend off, but they were doing okay. What Emily did to her body felt good, and JJ made sure to constantly reassure her of that fact. She could certainly appreciate the pleasure that came from Emily's long fingers or talented tongue, so that wasn't the problem. Hardly. It would feel amazing, be building into something – building, building – and then as hard as she tried not to, JJ would think about an unsub, or her grandma, or that time she tripped climbing up the stairs at the library the first week of her freshman year of college, and all of a sudden her brain would be saying enough even though her body was chanting don't stop don't stop don't stop.

"Are you sure, babe?" Emily would ask when JJ's brain won her internal fight no matter how hard she tried to battle against it. "You're so close, I can feel it." And despite her best intentions, JJ would nod, and because she was a good girlfriend Emily would stop and wipe her hand on the sheet and curl up next to JJ, spooning her from behind. "It's okay," she'd whisper, wrapping an arm around JJ's stomach and pressing a gentle kiss to the skin just behind her ear. "We'll try again next time."

And they would, but to no avail. JJ would get close, make Emily stop, and then roll over and pretend she couldn't hear the disappointment in her girlfriend's voice as they cuddled together. And that was that, the status quo for a long while, until one day at work when Emily lingered behind in the conference room, waiting until everyone else was out of earshot before grabbing JJ's date book, pulling a roll of unicorn stickers from her pocket, and placing three on Friday. "I stole these from Garcia's desk drawer," she whispered conspiratorially.

JJ raised an eyebrow. "And what's so special about Friday?" she asked. "You taking me out or something?"

Emily grinned. "Quite the opposite, my dear. I'm keeping you in." At JJ's confused look, Emily explained further. "We're going to have a quiet night in. I'll make you dinner, we'll drink some wine. I'll give you a nice, relaxing massage, and then we'll make love all night long. And you," Emily paused for effect, leaning in closer, her breath ghosting over JJ's ear and raising the little hairs on the back of her neck. "You are going to have a mind-blowing, earth-shattering orgasm." And even though she'd never been able to before, JJ believed her.

So that's where she found herself Friday night, thanking her lucky stars that a case hadn't come in last minute and derailed their plans. Sitting up against the headboard of her bed, clad in only her underwear, as an equally undressed Emily Prentiss straddled her legs and ground her hips down over JJ's. They had been like that for some time, just kissing, mostly, with a little over-the-bra touching thrown in. They were going to take it really slow – that's what Emily had explained over their dinner.

"I'm so wet for you, baby," Emily husked against JJ's ear, kissing down her neck before pausing to suck on her pulse point. "You're so fucking sexy. I can't wait to see the look on your face when you come." JJ groaned and clutched at Emily's back, quickly divesting her of her bra. "Mmmm," Emily hummed, reaching behind her girlfriend to make quick work of JJ's own bra. "God, you're beautiful. Does this feel good?"

JJ nodded breathlessly, pulling Emily close against her so their breasts were touching as Emily continued to grind down in her lap. She reached a hand up to brush over Emily's hardening nipples, and then fisted it into Emily's hair, her nails lightly scratching at her scalp. "I need this, Em," she said. "I need this so bad. I need you. Please baby, please make me come tonight."

"Oh, god," Emily moaned, reaching a hand up to pinch at JJ's nipple, twisting it harshly before leaning backward to kiss down her girlfriend's body and sooth the ache with her tongue. "I love it when you talk like that, Jay. I could get off just listening to you talk like that." JJ fought to hide her blush as she pulled Emily's head back upward and crashed their lips together.

The two kissed for several minutes longer, their tongues gently massaging the others' until JJ couldn't stand it anymore. "Please, Emily," she moaned. "Baby, I need you."