Disclaimer: Everything you recognize is property of JK Rowling. Part of the "If You Dare Challenge". In order to curve the length of this fic, each chapter will be inspired by a song by The xx. Some lyrics and the title of the song will be included at the start of each chapter.

Things You Need To Know: This story is AU in which Voldemort never existed. Meaning the Potter's are alive and have raised Harry Potter, Neville Longbottom has also been raised by his parents. Snape, though a personal favor to Dumbledore, is teaching at Hogwarts in his position as Potions Master and Head of Slytherin. Lupin is also teaching at Hogwarts as Defense Against the Dark Arts Professor.

Sirius Black has never been to Azkaban. Dumbledore is of course still alive. Another key difference is that Harry Potter was sorted into Slytherin and has a sibling.

Another thing, Tracey's birthday is in October, so when the affair started she was technically an adult in the wizarding world. By her seventh year she'd be turning eighteen in the second month of her seventh year.

Prompt: Motorcycles (#17)

~x~X~x~

What's Kept Hidden

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For the Desired Effect Will You Come Back August or June, June? And I Hate That Tomorrow is December But This Collision Came Mid-Bloom.
(Fantasy- The xx)

Tracey Davis wasn't really sure how it all started. She supposed, it started with a crush. A crush that should never have happened considering he was a) old enough to be her father, b) her teacher, c) her Head of House, d) not particularly attractive, either in looks or personality, e) he more or less treated her best friend with complete disdain and unfairness and en fin, the reasons could go on and on.

If anything, if she were going to start an affair with a teacher, she really should have gone for Lupin. After all, he was far more attractive, and with a soothing and friendly personality which would probably counterbalance her own moody, cynical and temperamental nature. But considering the man had his own hang-ups when it came to his relationship with Nymphadora Tonks, she supposed it wasn't as though he were truly an option.

Hell, she was quite sure the only reason Snape even started anything with her was because he was drunk at the time. Not to mention, just found out that Lily Potter, who Tracey suspected the man to be in love with, had just announced that she was pregnant again.

Considering the gap since the last Potter child had been born, Tracey found this a bit strange but didn't comment. It wasn't really her place. Besides, the Potter's seemed genuinely happy about the prospect of another baby in the house. With the exception of Jasmine, but then Jasmine was a greedy, spoiled brat in Tracey's opinion. Tracey wasn't sure how Harry and Jasmine were siblings, considering they were so different.

Although, she supposed that being siblings didn't make you clones or remotely similar. After all, she and her own younger brother, Mason, were very different. While Mason was out-going and sociable, Tracey was decidedly un-scociable and for the most part disliked the outdoors. While Mason was a womanizing cad disguised as a perfect gentleman, Tracey preferred to abstain from romantic relationships altogether, only taking part of brief trysts that consisted of getting what she wanted and then being done with it.

The only thing she and Mason probably had in common was the fact that they were both complete commitment-phobes. But when considering the decidedly dysfunctional dynamic that was their parents' marriage, it was really no surprise to anyone.

Tracey wasn't sure why her parents didn't simply call it quits on each other and call it a day considering the fact that they were both career adulterers and fought like cats and dogs. Tracey once asked her father when she was very young why they didn't divorce and he gave her some dribble about their still loving each other.

As Tracey grew older, she grew to believe that her parents didn't love each other but rather loved hurting each other.

If Tracey could have, she would have divorced her entire family before she was even seventeen. Unfortunately, considering her monetary situation, even when she did turn of age, she had no choice but to continue living at home. Though, she spent most of her holidays at the Potter's home, which contributed to how the whole affair started. After all if she hadn't been at the Potter's on that specific date, perhaps all this could have been avoided.

Although, considering the fact it started on Jasmine Potter's fifteenth birthday, her presence at the Potter home would have been necessary anyway. After all, she was Harry Potter's best friend. Attending his little sister's birthday celebration was just one of those best-friend duties one had to perform. Even if, like Tracey, it wasn't with any particular grace.

-July 22nd, 1997-

"You're wearing that? Really?" Jasmine Potter asked as soon as she opened the door. Tracey's grey-green gaze narrowed on Jasmine Potter's doe-like, dark brown eyes.

"And just what's wrong with what I'm wearing?" Tracey asked, looking down at herself and seeing nothing wrong with her black pleated skirt, plain black t-shirt and canvas sneakers.

"Nothing, if you're attending a funeral," Jasmine replied with slight sarcasm, opening the door wider and stepping aside to allow the taller, older girl to step into the foyer before closing the door after her.

"You've been spending too much time with your godfather," Tracey commented in deadpan, before taking in the newly fifteen-year-old girl before her. As much as she hated to admit this, Jasmine Potter was very pretty with her porcelain skin, perfect jet-black hair that fell past her shoulders in bouncy waves and her stunningly, big brown eyes. She also had a somewhat curvy build, which was showed off only all too much in her short floral dress. "At least my outfit doesn't make me look like a brady-bunch reject. News flash kid, the seventies are over and you missed it be several decades."

Jasmine Potter huffed before holding out her hand expectantly. "What?" Tracey asked, looking affronted as the girl started to tap one of her feet away impatiently.

"My birthday present," Jasmine stated presumptuously. "I assume you brought one. I mean not bringing one is extremely bad manners."

"Oh, I'll give you a present-" Tracey started threateningly before she was interrupted by a sweet voice.

"Jasmine, sweety, who was that at the door?"

"Nobody mum," Jasmine called back. Tracey scowled at the younger girl, but didn't get a chance to do anything to the younger girl before Lily Potter came into the room, looking every bit as beautiful as ever. Tracey smiled politely at the red-head woman, who bizarrely seemed to be glowing.

"Hello Mrs. P," Tracey smiled, mustering to be polite for a moment and to actually smile. But she genuinely cared for and respected Mr. and Mrs. Potter so she could muster to be more sociable once in a while, at least for their sake.

"Tracey, dear, I'm so glad you could make it," Lily smiled before walking over and engulfing the dark-haired girl in a hug which Tracey returned a bit awkwardly. Shows of affection were never her forte. "Harry's in the backyard helping James, Remus and Sirius set up."

"All right, thanks Mrs. P," Tracey stated before making her way over to the kitchen and out the patio door into the backyard. Having been to the Potter's often in the past six years, Tracey more or less treated the Potter's like home away from home. Her real home being Hogwarts, of course.

Tracey was somewhat impressed when she saw the fancy, silk tent set up in the backyard especially when she stepped into the tent and realized that the inside of the tent exceeded the size of the Potter's backyard. Tracey shook her head and smiled, thinking about the wonder that was magic before she felt an arm be slung over her shoulder. She was about to be very pissy when she turned and noticed it was Sirius Black.

"Hello love, miss me?" Sirius asked, grey eyes twinkling with mischief and roguish grin plastered on his face. Tracey was unsure why, but for as long as she had known Sirius, he had always teased her about her being perfect for him and that as soon as she was old enough, he'd marry her. His open-flirting with her used to make her uncomfortable, but as soon as she was old enough, she saw it for what it was, Sirius just wishing to embarrass her and so she learned to give as good as she got.

"Not nearly as much as I've missed your bike," she responded, shoving his arm off her shoulder. "Tell me you brought it, or I'll just die!"

Sirius reached both his hands to his heart with a wounded expression before looking over at Remus. "Do you see how she wounds me? And all this time I thought she loved me for my good looks and roguish charms and all along she's been in it for the bike!"

Tracey looked over at Professor Lupin who was only just finished setting a few chairs at a few tables and smiled over at them tiredly. Tracey was quick to note his too pale features and wan smile and chalked it up to the full moon that had just passed as she absently waved at him.

"Cut it out Sirius," Harry stated as he ran over from helping his father set up the last of the tables around what looked like a dance floor. Tracey turned her attention to her best friend, who grinned at her.

"I wasn't sure you'd come," he stated.

"O ye of little faith," Tracey stated with a roll of her eyes before turning to look at Mr. Potter, who was nearly a replica of his son, or vice versa. "Hey Mr. P."

"Hello Tracey. How's it going?" he asked. Tracey shrugged.

"All right," she stated before turning her attention back to Harry. "Daphne isn't coming. It seems her family has decided to spend another week in Sicily."

Harry nodded. "Yeah, she dropped me a line. I just got it today," he stated with a shrug of his own slender shoulders. "Do you want to get out of here for a while?"

Tracey nodded as Harry went to inform his dad. When he came back for her and motioned for them to go, she put up her hand to stop him. "Hold on," she stated before turning to look at Sirius who was now seated with James and Lupin at a table, each of them imbibing a butterbeer. "Hey Sirius. I was serious about your bike! You best have brought it!"

"Sweetheart, if you are going to be this bossy, I'm seriously going to have to reconsider marrying you," Sirius muttered after much bullying on Tracey's part for Sirius to lend her his bike. However, he finally acquiesced, handing over the key the ignition. Tracey quickly snatched it up and skipped back over to Harry's side.

"You two be careful!" James called as Tracey tugged Harry away. "No flying that bike."

"Of course," Tracey called behind her as she dragged Harry out of the tent.

"You're not really going to listen to him about the not flying it, are you?" Harry asked skeptically.

"Of course not."

When they had returned several hours later, after nearly being caught by the muggle police for speeding and then later almost caught flying over Surrey by the Magical Law Enforcement Squad, it was to find that the party had started. While Harry went to socialize with his other friends (Gryffindors and the like), Tracey found herself sneaking shots with Sirius every now and then (Sirius always having been very irresponsible).

By nine o' clock when the large cake in the shape of a glass slipper was brought out, Tracey felt as though she were floating on cloud nine and watching everything through a dreamy, foggy, film. Which is why when the Potter's announced that they were expecting, her eyes hadn't widened comically. Much to her bafflement, she found herself next to Harry at that precise moment and wondering when that had happened.

"Did you know?" she asked, her voice sounding oddly husky even to her own ears. Granted Tracey's voice had always had a sultry quality to it, considering it has never been particularly high pitched.

"No," Harry responded, shaking his head and not sounding pleased. Though, he didn't sound pissed either. Tracey thought if it had been her, and her parents had told her they were going to have another kid, that she'd probably throw a sink at them. Then again, her parents probably shouldn't have ever procreated in the first place.

"Well congratulations, you're gonna be a big brother... again. Hope this one's not a turd," Tracey commented before waltzing away towards the dance floor for another bout of dancing. Tracey seemed to only find the courage and desire to dance like nobody was watching when she was slightly buzzed.

Unfortunately the couple shots of firewhiskey she had taken were staring to be worn out of her system by all the dancing so that soon, Tracey found herself turning away in search of Sirius so that he could give her another one when she crashed straight into a solid body. Looking up, she was nonplussed to find herself staring at Professor Snape.

"Ooops, I'm sorry. Here, I'll help you clean up," she blabbed before grabbing hold of his wrist and dragging him out of the tent and into the Potter's backyard before leading him through the patio door into the kitchen. Considering everyone was out in the tent in the backyard, the Potter home was completely empty and therefore silent. Tracey briefly thought that the tent must have silencing charms around it as the noise from the backyard did not seem to reach the Potter's kitchen.

If Tracey thought it was odd that Professor Snape was so quiet, pliable and accommodating she probably would have been more sober. But she didn't notice, anymore than she would have noted that it probably would have sufficed to just grab any old rag from a near by table to mop him up instead of dragging him to the kitchen to wet a kitchen towel and dab at his black robes.

"Aren't you hot?" Tracey blurted out as she patted Snape with the small, terrycloth towel and feeling the layers he wore by the action. Tracey knew that she was wearing all black too, but she was in a somewhat short skirt and a t-shirt. She couldn't fathom how Snape could go around in robes that buttoned all the way up to his neck with button-up shirt under along with pants. As it was, she could even feel a light sheen of sweat on her neck and around her hairline from all the dancing she'd been doing.

"I think you've only wet my robes more," Snape commented distantly, his speech only hardly intelligible to Tracey. Though whether that was because she was too drunk to hear right or he was too drunk to speak right, Tracey would never know.

"Oh," Tracey muttered. "Then just take them off. Here, I'll help," Tracey stated, unable to control what came out of her mouth or even her own actions as she proceeded to unbutton his robes. However, Snape didn't bother to stop her so she took it as him granting her permission as she proceeded to remove them.

It was only as she was sliding her hands down his arms to help him out of his robes that Tracey felt the sudden spark of desire shoot from her center and tingle all the way to her fingertips and toes. "You're kind of fit," Tracey stated, her voice lowering to a whisper, giving his biceps a gentle squeeze.

Snape didn't comment to this and Tracey dragged her eyes slowly up to meet his gaze which were softer than his usual intense glare and seemed to gleam in the near darkness in the kitchen, only lit by the glow from the tent coming in through the glass patio doors and the kitchen windows. His scowl too was lifted, though his face seemed as expressionless as always. However, there was something in his eyes that Tracey took almost as a challenge as she lifted herself on her toes and pressed her lips against his.

Tracey waited for a moment before proceeding to place a languid kiss on immobile lips. However, as she prodded with her tongue at their outline, they opened to her with seemingly little hesitation. When Tracey brushed her tongue against Snape's, it seemed he was finally stirred from his catatonic state.

Arms slipped around her waist, pressing her long slender body against his. Tracey moaned as she felt something stirring in his pants and beginning to press against her insistently as their kiss quickly became feverish.

It wasn't long after that, that Tracey had been lifted onto the kitchen counter, her skirt shoved up and her panties vanished. Considering Tracey was more than slightly inebriated at the time, she wasn't able to be disappointed when it was over quickly.

After it was over and done, both Slytherins adjusted their clothes and traipsed away from each other with hardly a word, Tracey once more and hunt for something to drink and Snape... well she wasn't sure what he was after. She guessed that he might have gone after that, as she didn't recall seeing him again after.

When morning came, along with sobriety, Tracey was somewhat horrified to recall the events of the previous night. She tried to calm herself by telling herself that she would simply avoid Snape at all cost from that point on. Not something difficult to do, least for the summer, except Tracey was best friend's with Harry Potter. Whose sister was Snape's goddaughter and whose birthday was in just over a week. Meaning that Tracey would, most likely, have to see Snape again.

On the day in question, Tracey arrived as late as her conscious would allow her. Only to be hauled, literally seconds after her arrival, into the closet by none other than a very sober, very angry Severus Snape. However, whatever it was in his mind to say to her, which she guessed was to tell her that what happened was a mistake that would never happen again, Tracey didn't get to hear. At least not the whole rant as the closet was rather very tight fitting and shoved them in such close proximity that their limbs were touching, and Snape grew to find her labored breathing very distracting.

That time, neither one of them could blame alcohol for their actions. Tracey wanted to blame the traitorous crush she had on him when she was younger, or the fact that the previous time they were together was so completely unsatisfying that she wanted a good and proper go of it before letting it go.

It was only after they both stumbled out of the closet several minutes later that Tracey briefly considered that somehow being in a closet, with a teacher, might have added to the excitement of the entire encounter. She pondered, as the evening wore on and she kept shooting pensive glances at Snape, that being with him gave her the same thrilling feeling she got as when she was on Sirius' motorbike. And that like with Sirius motorbike, she might enjoy several rides.

TBC...

A/n: So that's all for now. Any questions, feel free to ask and I will get back to you. Also, please review, cause at this point I'm not sure if I will continue this story beyond what I have written and if there is interest, I will attempt to finish this.