Disclaimer: The world of Harry Potter is property of JK Rowling. Title (which may be subject to change) inspired by a song of the same title, by Muse.

A/n: This is part of the Revived "Smut University" Challenge now being run by raspberriesandrum. As such, each chapter is supposed to feature some smut. Also I will be adding prompts from "The If You Dare Challenge" as I have quite a bit to work through on that. The prompt immediately followed by (#) are for "The If You Dare Challenge".

Warning: This story will have a very definitive M rating, due to adult content (and the nature of the challenge).

Given Scenario: Harry is getting into mischief, Snape needs distracting. As a good older sister she could do no less than agree to thoroughly distract the man.

Prompts: Wine (#235), Formal Wear, Tongue, Frottage.

Undisclosed Desires

From the moment she set foot inside the castle Severus knew his heart was once again not his own. And to add insult to injury, she had James Potter's eyes.* And his unruly mass of jet-black hair, though rather much longer, obviously.

It didn't much help matters that her half-crooked smirk, had a certain amount of cockiness that reminded him of the father. Or that for all her small stature, she always glided around (all Lily's grace, that) with her head held high.

It all served to vex him.

How it was, throughout the years, that she managed to worm her way into his heart, he wasn't sure. Perhaps it was the fact that all the teachers raved about how polite, sweet and bright she was from the start. He'd thought it was the side of Lily that he'd somehow missed, that always had him watching her, trying to see the mother in the daughter. But he couldn't see it, just a superficial kind of charm that didn't quite work on him. Perhaps because he could see into those eyes.

Perhaps it was those eyes themselves, that managed to break his barriers. Not the round, doe-eyed look. Not the spectacular coloring in those hazel orbs, but the expression. It was simply so guarded, that he couldn't help wondering why this particular child had learned to build such barriers around herself.

And just maybe, it was something else. Something that called to that overly-protective side of him. Perhaps her extremely small stature, perhaps the pallor of her skin, or the lavender, half-moons beneath her eyes.

Whatever the cause... she owned him. Had him wrapped around her finger... and somehow he had the feeling since that since the damn Yule Ball, that she was becoming increasingly aware of the fact.

It was those damn dress-robes, the makeup, and the amount of effort put into taming that wild mane of hers... that for the first time she transformed into a beautiful young woman for all the world to see.

Yes... he'd been uncomfortably aware before that Miss Potter had a very pretty face. But he was grateful that the mandatory school-robes hid rather a lot of her petite, slender figure, so that absolutely no curves were visible and he could go on seeing her simply as a child he had to protect, all the while ignoring her existence as much as possible.

The Yule Ball had... shifted things. Or perhaps simply brought things he'd been keeping at the back of his mind and unacknowledged to the fore.

She'd been simply- too lovely for words. The dress robes, while tighter than school robes, were not inappropriate for a girl of sixteen. They were a shade of midnight purple silk, with inch-thick straps, and fell against her frame like gossamer.

Her hair, that unruly mass that only fell a couple inches past her shoulders, and tended to flick in every direction at the top had been painstakingly straightened and pulled and pinned out of her face, which was lightly made up, making her already dark and sooty lashes that much longer and thicker. Her lips were painted a shade of pink, that wasn't too dark but still popped against her hazel eyes and pale skin.

To make matters worse, she'd gone and done the Gryffindor thing, and actually had the nerve to walk up to him and ask him to dance with a challenge in her sparkling gaze and a mischievous smirk on her lips. And he couldn't bring himself to turn her down or back down when she was looking at him with something he couldn't quite decipher...

He could almost recall the feeling of the cool, incredibly delicate and thin silk at her waist on his palm. Feel her body's warmth through the material that it may as well not have been there at all.

She was wearing heels, because of the top of her head which was usually barely level with his shoulders, fell to just beneath his chin.

Or course, that hadn't been enough. Only enough to make him a bit more aware.

It was seeing her with someone else that had pushed him over the line. It had called to that facet of him that had never done him much good in the past. That fiercely possessive streak that ran through to the very core of his being.

It seemed it was as much a shock to him, as it was to the girl, when he'd pressed her back into one of the castle walls, hidden behind a statue. More shockingly, to him at least, was the fact that she responded to his fervid kisses with as much passion, hands looked into his hair and robes, pulling tighter against her as little mewls escaped her throat.

Merlin, he'd almost completely lost control then. Something about her simply turned parts of his mind, the control center, into a horny teenager. Allowing a more primitive frame of mind to take over, one that simply wanted to possess her and claim her as his.

He could have taken her then, legs wrapped around his waist, against the wall without care that someone may come across them.

But as much as he wanted her, as much as he couldn't get over her devastating and hot little tongue vying for dominance against his, tasting sinfully of wine... he hadn't. He may have been hard as a rock, pressed tightly against her body, hands clutching at her desperately, but somehow he'd come to his senses.

Though, she hadn't been of any help; moving against him as she was, grinding her center against whatever part of him she could reach, hands continuously pulling him into her.

It had been like she developed tentacular vines instead of hands, and for some reason, she hadn't wanted him to pull away. Perhaps because she knew the moment they did, their little passion-filled make-out session would lead to awkwardness. Perhaps because she knew the moment he pulled away, he'd managed to gather his senses, and not be able to abide her presence for the coming months.

Indeed, he'd done his damnedest afterward to put the occurrence out of his mind. To avoid her presence.

But nothing could take that memory, or the nagging guilt. He felt like an old, lecherous fool. And the idea that he'd taken advantage of an underaged girl who clearly had to be inebriated, her daughter... made it so that he couldn't even bare to look at the girl for the remainder of the year. Because he felt dirty every time he did, even though his heart clenched at the idea... that he could have made her his. Could have possessed her. Could have taken over her heart, the way she'd taken over his.

But if he'd tainted her... that was hard to say. Miss Potter, he could see it though no one else could, had some darkness inside her. And he had a feeling that he was actually her prey.

It was simply a matter of time.

TBC...

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