Percy glares at his math homework, wondering who came up with this torture and who decided it was a good idea to teach it to teenagers. He's been stuck on this problem for twenty minutes, and he's ready to shove the book off of the coffee table. To attempt to ease his frustration, he takes a deep breath, but that only causes him to catch the scent of lemons. Percy groans softly and turns to Annabeth, who's sitting in her normal spot. She's chewing on one of her many pens while reading some boring facts out of her boring book about her boring AP class. Everything is exactly as it's always been, she's still his best friend, still spends almost every day at his house, still wears that ridiculous uniform, and still torments the ever-living shit out of him.

Because the issue with kissing his best friend is that now everything is more real, more tangible. The fantasies he still drifts off into when she's sitting so close to him that he can smell the lemon shampoo she uses, hear the rustle of her skirt fabric, practically taste the strawberry chapstick, are so much more now. Because now there's a kiss to compare it to. A lip searing, clammy hand inducing, mind-blanking perfect kiss. Percy knows what it's like to have her pressed against him, her chest rising and falling as she sucks in the air her lungs must be desperate for. He's seen her eyes flutter closed the moment before, and remain closed the second after, she kisses him. All of this makes it impossible not to think about kissing her again, about pressing his fingers against her skin, about plunging head first into her just one more time.

If the kiss haunts her as much as it does him, she doesn't show it, working away at her homework as if nothing has changed. Percy hates it, hates this is what he's reduced to, but there's nothing he can do about it now. He kissed his best friend, the girl he's been absolutely crazy about for years, and there's not exactly a way to go back from that. So this is what Percy's left with, the continued torture of having her always around. Living in a broken loop of half true, half fulfilled fantasies, fantasies which only grow worse every day.

It doesn't help that after the kiss at the skatepark they'd become official, even going on their first date. Giving Annabeth the title "girlfriend" has seemed to only increase everything, as if any of the vague fuzziness has been scrubbed away to leave raw, fresh feelings. Ones that Percy's very eager to explore, he's just not sure what the acceptable waiting time is before you start leaving hickies on your girlfriend, or doing other things to her. It's just that it's so difficult to not to think about that.

Yesterday, he'd thought about kissing his way down her neck, down the exposed skin of her chest, shucking up her skirt, and diving between her legs. The idea comes seeping back into his mind, an empty ache that starts in the hollow of his gut and clings to his muscles. He wears this now, a weight that clings to him just below his skin and drives him mad. Percy's felt the waters for the briefest of moments and wishes he could lose himself in them, in her. He wishes he knew what it felt like to have her fingers curling in his hair, her hips bucking against him, her lips singing his name. He wants to feel a fire between them that burns until it's the only thing that matters, the only thing that exists. He wants her come undone under his touch. Part of him wonders what she'd taste like, if he could unravel her with just his tongue.

"What?" she demands, voice stern. Annabeth lifts her head, eyes hard and searching. "What are you thinking about?"

Percy feels the heat rush up his neck, but he can't help that his eyes drop to her crossed legs that stretch out under the table, or that his tongue darts out to lick his lips. Her eyes widen slightly, lips just barely parting, and her chest rising.

"No," she says firmly. "That's- no."

He catches the way her knuckles turn white around her pen.

"I'm not taking advantage of the fact you're mom's leaving us alone in her house." Annabeth turns back to her book, flipping the page and running her eyes over the fresh words. Her lips move slightly, and he could swear she mutters something along the lines of 'at least not yet' and he grins.

"Shut up and finish your homework," she says, eyes still on her work.

"Fine." Percy turns back to his homework, but his mind isn't on math. It's on having her on the table in front of him, her legs spread, his hands running over the skin of her sides. It's easy to get lost in the idea of it, the idea of her panting his name. He wonders what it would take to have her pant his name, what spots he would have to kiss, to press his fingers against her breath to hitch in her throat.

He should be thinking about his math homework, but it feels like a much better use of his time to imagine getting his girlfriend off. That seems like a task worthy of his talents and skills. She's been swollen lipped and breathing heavily already, wrapped in his arms which slightly lift her off the ground. Percy wishes he was taking anatomy instead of algebra, that's a subject he'd be more than happy to practice with a partner.

Annabeth's always been composed and put together, which makes the idea of her losing herself in his lips so much more exciting. The Annabeth everyone else sees is steel-eyed and determined. The Annabeth he knows worries all the time, gets hurt but tries to hide it, and absolutely hates crying in front of others. The Annabeth he wants to get to know better is the one with fire in her eyes and hunger in her kiss, who's fingers curl into his skin as if to bury herself inside him. This new Annabeth is also definitely worth getting to know.

Percy's ready to give up on his homework all together when Annabeth climbs onto the couch. She swings a leg over him, her thighs pressing in on his waist and her arms resting on his shoulders. His heart rate doubles, every inch of his skin starts to feel so much warmer. All he can focus on is that her skirt has ridden up her legs, and that the top three buttons of her shirt have just happened to come undone.

"So," her voice is thick and husky. "What exactly were you thinking about?" There's a teasing grin on her face.

A small, frustrated groan slips out of his throat. He tosses his pencil, hearing it clatter across the table, and leans up to kiss that smug look off her face. Her lips are still as soft and perfect as ever, shattering his resolve like glass. Slowly, his hands move to her waist, then slide behind her and settle onto her ass. He gives her a firm squeeze, enjoying her hiss into his lips and letting himself smile. Annabeth's retaliation is to weave her fingers his hair and deepen the kiss, her tongue running across his lips. Percy gives into all of it, her lips moving against his, the way her tongue teases his own, her hands digging into his hair and back. Everything he has he pours into the kiss, building to that moment they'll have to break apart and fight for air. He lives for these moments now, when his chest feels as if it will burst, when the world is swept away until all that's left is the feeling of her, when he can lose himself in his girlfriend and what she drags out of him.

His homework won't get done but it doesn't matter, there are more important things to focus on. Soon enough she'll be breathless and gasping, her eyes pinched closed as he kisses his way down her neck to taste every inch of exposed skin he can reach. She'll throw her head back, lip tucked between her teeth, and her hips will start to slowly work in little circles. Percy already tingles with the feeling of it, the tension that will build in their bodies. It will drive them forward, send them spiraling towards that perfect oblivion, and it will only deepen this hunger that grows inside him with every passing day but he doesn't care. What he cares about is the girl on his lap, the one pressed against him until there's barely room. All that matters is the fact that he gets to wrap his arms around her, to twist his fingers between hers, and press his lips to hers. All that matters is that he loves her.

Because the good thing about kissing his best friend, is that she kissed him back and he ended up up with everything he ever dreamed of.

A/N: Thank you all for reading, this is the last chapter and sadly the fic is over but you can always come by my tumblr son-of-rome and see what else I'm up to