A/N: Blah blah rated M for a reason blah blah smutty blah. Enjoy!

REYNA

"You're in a pair of shorts and a tee shirt."
This is not what Reyna expected when Piper had called her and asked her to come meet up at the library.

"You didn't even change shirts," Reyna says, looking around the library. "Good god, you idiot, here, take my sweatshirt. Your legs are going to freaking freeze right off."

"For my legs?"

"Whatever!" exclaims Reyna. "Put it over your lap or you're going to freeze." Reluctantly, Piper takes the lavender sweatshirt and lays it over her thighs.

"There," she says, sticking her tongue out at Reyna, and Reyna's only response is to glare at her. "You're just trying to make my life more difficult, aren't you," Reyna grumbles.

Piper shrugs. "You're the one who gave me a sweater blanket, so maybe you're trying to ruin my life."
"How is that ruining your life?"

Piper looks like she's about to respond, but a student librarian, at that very moment, walks over to the two of them.

"Could you two try to be a bit quieter?" he asks politely. "I know that midterms are stressful, but I don't want to have to ask either of you to leave." He's giving them both a don't mess with me kind of smile, so neither of them fight it.

They both nod and mutter apologies, but the second he leaves, Reyna turns to Piper.

"You are making my Sunday all weird," she says as quietly as possible, "and I'm terrified to see what you're going to do tomorrow in class."
Piper grins at her and twirls her neon green pen in her hand. "Oh, just you wait," she says, her grin seductive and scheming at the same time. "I'll come up with something."

Piper is licking the filling out of an Oreo.

Piper is licking the filling out of an Oreo, in front of Reyna, in public.

Piper is so doing this on purpose.

Reyna's eyes are locked on the way Piper's tongue is moving against the cream, and she can't exactly focus on anything else.

"Miss Arellano," calls Professor Grey, "I asked you a question." This has never happened to Reyna in her entire life. Goddamned Piper McLean.

"I'm sorry, can you repeat the question, Dr. Grey?" Reyna asks, trying to smile apologetically.

"I asked you if you thought that the US handled foreign relations pre-World War I effectively enough."

Reyna's nearly positive this has nothing to do with what they're talking about, but Professor Grey is definitely trying to challenge her and she's not going to go down without a fight. But she's also learned more than once that bullshitting an answer to try and look like you were listening does nothing but make people hate you. She briefly flashes back to an unfortunate time when she mixed Da Vinci's name with DiCaprio in eighth grade and the entire class called her Kate Winslet for a year. "Well," Reyna begins carefully, "I don't think I have enough experience in the matter to make an informed decision about the topic. I haven't done much research into US foreign relations policies."

The whole class turns to her in that moment, which is really quite awkward because even the people in the first few rows turn around. She braces herself for the most humiliating calling out in the history forever. She feels her face turn beet red, and she's about to clench her hand in a fist when Piper wordlessly puts a hand over her thigh and pats it comfortingly. She thinks it'll make the embarrassing humiliation easier to bear.

But it doesn't come.

"I appreciate your honesty, Miss Arellano," says Professor Grey. "In fact, we were discussing the railroads, if everyone would like to find that page in your textbooks, I have a quote to work with, which may or may not be of assistance on your next essay exam." And the entire matter is over, the class moving into a steadier, easy pattern without any more mention of what had happened.

Except on Reyna's end.

As she and Piper lean down to get out their books, Reyna turns to Piper. "Don't fucking do that to me," she whines. She hates how it's a whine. For once she would like to talk to Piper in a civilized fashion where she doesn't sound like some pathetic lovesick puppy dog or they're not swearing at each other like middle school boys. "At least not in class. I know it was on purpose."
To Reyna's absolute disbelief, Piper just sits back up and stares at her, plain confusion on her face. "Do what?" Piper asks. "The thigh thingy? I thought the little pat would help. I'm sorry." And Piper looks so sad and genuine and puppy-like that Reyna has to believe she's telling the truth.

"Not the thigh patting," Reyna says, "no, that did help. I mean the Oreo thing you were doing."

"What Oreo thing?" asks Piper, that same uncharacteristic puppy expression honestly painted across her face

"The licking thing," says Reyna mindlessly, "I mean, you were licking an Oreo rather…sexy-like and it was incredibly distracting."
In a way that was more in Annabeth's style than Piper's, Piper looks down at her Oreo as if she's examining it's strange impact on Reyna, like the Oreo was to blame for what had happened instead of Piper. "The Oreo?" Piper asks.

"No, you idiot, the way you were licking it." Reyna shifts in her seat, suddenly too hot and a little uncomfortable. "It was – you were…" She looks around briefly, making sure no one is listening to their conversation, "you were being seductive and licky."

"You got turned on by me eating a snack?" asks Piper. "Jeez, I should never dirty talk you. You'll probably just blow your load when I say the word 'boobs.'"

"Not just eating a snack, you moron," grumbles Reyna, "you were licking it in a distinctly sexual manner."

"Not sexual," says Piper, sitting back up to signal that the conversation is over. "I was eating a freaking Oreo."

Reyna groans and turns back to the lecture, where the discussion has turned to monopolies and powerful white dudes that Reyna couldn't care less about right now. Her mind's full of the other things Piper can do with her tongue, and then her mind shifts to what Piper does with her fingers, with her lips, and, oh god, she just wants to bail on this class and fuck Piper up against some wall somewhere.

The next forty minutes last absolute ages, and it's even worse when Piper, knowing exactly what she had been doing, starts on another Oreo and starts licking it in a way that can't be even remotely be considered for the purpose of eating the Oreo, and instead is for the purpose of ruining Reyna's life.

Sometimes she hates Piper, in a very distinctly not hateful way.

"Stop that," Reyna almost whimpers, and she can't help it now that she's positive Piper's doing it to mess with her. Piper grins at her and her eyes look absolutely sinful as she licks a stripe up the center of the Oreo, eyes locked on Reyna, and Reyna resolves to kill her good and dead before the day is over. It's not fair that she's doing this, at least not in class.

Professor Grey looks at the clock a few seconds before class is supposed to end, and says, "Well, I suppose now I should start explaining to you your next essay," and through the entire discussion, Piper's drawing little nameless designs on Reyna's leg. Every touch is like a fire through Reyna's body, and every time she slaps Piper's hand away it finds its way back.

Piper is going to literally kill Reyna.

Finally, after an agonizing five minute explanation, Professor Grey stops rambling and Reyna's got her stuff packed up and she's standing up in her seat before most people have even put their pencils down. Piper is staring up at her.

"What's the rush?" Piper asks, leisurely placing her pencil and binder into her backpack.

"You know what," Reyna snaps, and she'd feel bad about being so cranky if Piper didn't just grin at her horribly. She knew exactly what she was doing.

Reyna grabs her hand as she stands and looks around, trying to find a place to get this over with before she literally just explodes in front of the entire classroom.

"That'll do," says Reyna, yanking Piper into a slightly open janitor's closet. She feels around for a light, turns it on, and then shoves Piper up against the door.

"What the –"

Reyna shuts Piper up with a searing kiss and wraps her hands around Piper's thighs, lifting her up to lock her legs around Reyna's waist. Reyna's in control now, not Piper, and she grins against Piper's lips as Piper's gasping against her as she realizes that Piper's lips taste like the Oreo cream filling. It's an odd experience, but it reminds Reyna exactly how much torture Piper put her through for all of their American history class.

That's when Reyna pulls away. She sees Piper's lips follow her, but she doesn't let her find Reyna's lips again.

"Nope," says Reyna, "you teased me for an entire class period. It's my turn now."

"No fair," says Piper, frowning, "it was by accident!"

"At first, maybe," says Reyna, "but after a few minutes and after Professor Grey called me out you totally knew what was going on."

Piper shrugs. "Well, I got you to make out with me in a closet on campus, so am I really in the losing position here?"

Piper has a point.

Reyna lets go of Piper's legs, and she looks startled as she slides down the wall. "Hey!" she exclaims. "Now you're just hurting yourself."

"Not true," says Reyna. "You're getting frustrated now too."

"Am not."

"Are too."

Reyna raises an eyebrow. "Are you sure about that?" Slowly, Reyna reaches behind her head and pulls the pins out of the braided bun hovering at the nape of her neck, and shakes her head lightly, feeling the long locks shift against her back. "Because I can change that in a few seconds, can't I."

Piper's staring at Reyna now like she wants to rip her clothes off, which meant, of course, that Reyna's plan was working perfectly. Piper walks toward her, but Reyna holds out a hand and sends Piper a smirk. "Nope. You can look, but not touch. Not right now."

PIPER

Piper swallows and tries to subtly rub her thighs together to get a little of the friction she needed. At least, she thought it would be subtle. Reyna looks at her and smirks again and Piper knows that, yep, she saw and, yep, not so subtle after all.

At first, she thought Reyna was kidding with the Oreo thing, but now she realizes that it got Reyna worked up in a way that kind of made Piper happier than she could have been had she done it on purpose.

Happy and really, really, frustrated. She hates to admit it, and never in a thousand years would admit it to Reyna, but the other night when Reyna pinned her down was one of the best night's she's ever had. It's been throwing Piper off a little bit, but as Reyna pulls out her hair pins, all other thoughts leave Piper's mind.

Piper watches Reyna's dark hair fall across her shoulders and winces. It's way too much and nowhere near enough all at the same time.

Piper goes to speak, to say something, but all that comes out is a pathetic little squeak she'll be kicking herself for for the next eight thousand years.

"That's what I thought," says Reyna, and that's when she does it. Reyna's pulling off her shirt, slowly, agonizingly slowly, and Piper's jealous of the silk fabric that gets to brush against the smooth skin of Reyna's stomach, of the buttons that stretch across Reyna's chest, of the collar that's gotten to touch Reyna's neck and collarbones all morning.

This is so much worse and so much meaner than what Piper did with the Oreos and she can tell Reyna knows it. Taking a risk, Piper move forward, and Reyna just shakes her head, paralyzing Piper where she stands.

"Look," says Reyna, "don't touch."

Piper lets her head clonk against the door as her eyes drift shut in frustration. Maybe if she can't see it, it won't kill her like this.

Reyna, apparently, has been expecting this. She starts moaning and sighing, and it's like Piper's eyes are forced open and forced to Reyna. Reyna is standing still, doing absolutely nothing but making the noises.

"Oh, come on!" Piper exclaims. "You're not even doing anything interesting!"

Reyna laughs. "Made you look," she singsongs, and Piper just glares at her even harder and begins to seriously consider opening the door and getting herself off in her own bedroom that doesn't smell like bleach and Pine Sol.

"So what?" whines Piper. "You got turned on by an Oreo."

"I got turned on by you eating an Oreo."

"Can we just fuck now to get all of this over with?"

Reyna sighs deeply, like it's a difficult decision for her to make. Difficult decision her ass, Piper thinks, she's been wanting this for way longer than Piper has.

Then Reyna raises her dark eyes up to Piper's and holds them for a few agonizing moments, not letting her gaze drop. And Piper feels herself losing the staring match, her eyes drawn down to Reyna's lips.

Reyna surges toward Piper and catches her lips in hers, and Piper, finally, FINALLY, is able to open her lips and taste Reyna and get over all this stupid sexual frustration that was one hundred percent, totally Reyna's fault.

It's moments like these that she really hates Reyna.

And then, it's moments like the next one when she really likes Reyna and she wishes she didn't, because it makes her think weird things like taking her to dinner and calling her before she falls asleep and introducing her to her father. Then Piper punches out whatever voice in her head came up with that bullshit and pulls herself back into reality.

Reyna kisses gently at Piper's neck and laces her fingers with Piper's as she presses them against the door, smiling against Piper's lips.

"Stop kissing me," says Piper, involuntarily, "stop kissing more other stuff."

"That's eloquent."

"You know what I mean."

Reyna rolls her eyes and drops to her knees, pulling down Piper's tights and underwear and hiking up Piper's skirt.

"Lean more against the wall," says Reyna, "you're up too high."

At this point, Piper would have killed a puppy, whatever Reyna told her to do to get this going. She slides a bit down the wall, giving Reyna better access, and somewhere in the back of her mind a voice pops up and says, "do you really think you're going to be able to think, let alone stand once this is all over?" But she ignores that voice, just like that voice that mentioned Reyna would love the Thai place down the road from Piper's house in California, and lets out a deep moan as Reyna begins, her arms wrapped firmly around Piper's thighs.

For as much as Piper mocked Reyna for being worked up, she's just as bad. It all started back when she saw Reyna walk into the classroom and her hair was up in this prissy little bun for once and all Piper wanted to do was pull it out of that stupid bun in bed. And that stupid silky shirt moved against her chest and clung to it like the shirt she wore that first night.

Piper just decides it's been a rough day for both of them, and let's herself feel it all, a hand dropping down to tangle in Reyna's long hair.

The mood changes when she hears keys jingling outside the door and someone press against the door to open it. She freezes, unsure of what to do. As much as she talks, she has never actually been caught in the act before.

"Fuck," says Reyna, standing up. "Piper, fix your fucking skirt."

"Goddamned door," they hear from a gruff voice outside the closet. Piper, stunned into silence, just stares at Reyna, who rolls her eyes and yanks her into a corner behind the door. Piper shimmies her skirt back to where it's supposed to be. Awkwardly, Reyna pulls her closer and presses her up against the wall, and Piper's regretting the fact that she wore a neon green sweater today.

It all happens in a matter of seconds, but they both breathe a sigh of relief when the janitor walks halfway in the room, finds whatever cleaning implement he had been searching for with a "Ah! There you are!" and closes the door, shutting off the light.

Piper tries not to think about how close Reyna is to her, but in the dark all she can do is feel, feel, feel. Reyna's lips mouth against her ear, and her fingers find the front of her skirt. Piper silently whispers something that might have been "yes" or "please" or another random string of sounds, but Reyna understands in seconds.

She drops her head back on Reyna's shoulder and bites her lip, fighting to keep silent as Reyna slowly moves circles against Piper's clit and bites a hickey into Piper's neck. It's too much in the dark, all she can do is feel and breathe, and gasp as Reyna's fingers move.

Reyna's murmuring things Piper's sure are dirty and sexy, but she can't focus on anything right now other than staying standing and not falling all over the surely disgusting ground.

It hits her hard and fast like a train and Reyna presses her hand over Piper's mouth right before Piper's long, drawn out, screaming moan comes out. Piper would have glared at Reyna, but it's dark and is it really worth it right now? She comes down from it against Reyna's shoulder, her eyes shut despite the dark room.

"You like to get caught, don't you, Piper McLean," Reyna growls into Piper ear, and goddamn if that didn't turn Piper on all over again.

Piper's only reaction is to whimper pathetically and turn her head to catch Reyna's lips in a kiss. She can feel Reyna smile against her, but there's nothing left in her that can come up with something snarky to say in response.

She feels Reyna rather than hears her laugh against her, then Reyna gently pushes her hair over her shoulder. "Come on," Reyna says, pressing her lips to Piper's neck, her tone bright and airy as usual again. "We should head out before anyone finds us here or the janitor comes back." She goes to walk away, but Piper limply just falls against her. Reyna laughs. "Damn," she chuckles, "If I'd know that's what getting caught does to you I would have just left the door unlocked every once in a while."

Piper's ever so eloquent response is to laugh like an idiot and get her feet moving again, staring at Reyna as she buttons her shirt back up.

Piper's tempted to ask her to leave it off, but Piper's already planning on crossing campus with her tights in her backpack, and doesn't push it. She follows where Reyna pulls her until they get to Reyna's dorm.

Piper's back to normal by the time she gets into Reyna's room, and by back to normal, that means she's fisting her hands in the front of Reyna's shirt and locking a leg around Reyna's hips, forcing them to fall into bed. It's an awkward moment when they have to shrug off backpacks and kick off shoes, but neither cares and neither even wants to care. Reyna lands on top of Piper with a graceless, "mmph," and immediately gets the message, letting Piper unbutton her shirt and shrugging it off as Piper pulls off her own top, hands always moving, hands against each other. It's rough and it's fast as the two of them pull of their clothes, and Piper rolls Reyna onto her back as she feels Reyna grab her ass, not very gently.

"Hey," says Piper with a laugh, her lips pressed against Reyna's collarbone, "go easy on me, will you?"

"Not likely," says Reyna, her voice half of a gasp as Piper gets her jeans down below her knees and presses the heel of her palm against Reyna's lime green panties. "Oh, fuck," Reyna moans, her eyes shut firmly.

Piper grins at how Reyna's hips writhe with the motion of Piper's palm, and just as a full rhythm is made, she stops, pushing a thigh between Reyna's legs and feeling Reyna set a pace for herself. Piper presses her lips down against Reyna's and kisses her deeply and firmly, feeling Reyna pull away every once in a while as the sensations get too intense, too much.

"Fuck," Reyna whines again, and Piper gets this weird, powerful thrill whenever she gets Reyna to swear for her. Hearing this generally well put together, classy lacrosse player say fuck only when Piper's pressing against her sets Piper off in a way she never thought possible, and it makes Piper press her lips to Reyna's collarbone again and lick down to where Reyna's breasts are just barely peeking out of her lacy bra.

"This is kind of sexy for having not expected anything today," Piper says, brushing her fingertips over the lace of the bra. She feels Reyna grind against her thigh with every movement Piper makes against Reyna's bra, and she grins. "Well, apparently someone was expecting a little something. Come on, moan for me. Make me want to take it off."

"Fuck you," Reyna moans. "Just get it over with."

"Over with?" Piper says softly, lowering her mouth to the lace. She licks against the lace until the flimsy fabric is damp and she can feel Reyna's nipple harden beneath the fabric. Reyna's voice gets more and more desperate as Piper's tongue laps at her skin beneath the lace. Reyna's nails grab at Piper's shoulders, and with a thrill Piper realizes that the hickey from the janitor's closet won't be the only mark Piper finds in the shower the next morning.

"Come on," Reyna whines, "come on, just fuck me already."

"I am," says Piper, and she can feel Reyna's body react as Piper's hot breath ghosts over the damp fabric of Reyna's bra. There's a quiet whine from the back of Reyna's throat as Piper rubs her thigh against her, and finally, finally, Piper gives her what she wants, moving her mouth down Reyna's body until it reaches Reyna's heat, and it doesn't take too long before Reyna's calling out Piper's name and gasping for air.

After a few silent moments where Reyna's getting her breath back and Piper's trying to keep herself from getting herself off just to make her life easier, Reyna's eyes open again and meet Piper's. "I think I like getting caught too," she replies, and halfway tackles Piper with a kiss.