A/N: Hey guys! I know I know, I should be updating my other longfic, but this story popped into my head the other night when I was about to go to sleep and I've literally been able to focus on nothing else sooo here it is!

It won't be as long though, I'm thinking about 5 or 6 chapters total, although I never really know where they're gonna end up completely.

Anyway enjoy it guys! I'll probably be writing a lot of it tomorrow and this weekend so it should be done soon!

Enjoy!

"Damn it," he cursed under his breath as his potion bubbled up to the rim of his cauldron, threatening to overflow. How Dumbledore had convinced Snape, of all people, to let him into his NEWT level potions class was beyond him. He hadn't done terrible on his OWLs, an Exceeds Expectations, but Snape had been adamant the year before about only allowing students who had earned an Outstanding to return. He grumbled under his breath, thinking maybe he would be happy with a career outside of the Auror Department. Something that didn't require NEWT level potions. He doubted he could even pass the exam anyway. "Fuck...fuck, fuck, fuck," he kept up a stream of profanities under his breath as his potion turned an alarming shade of yellow.

"Language, Potter. Ten points from Gryffindor," a cool voice leveled from behind him. He bit his tongue on another swear, sighing slightly at what he knew was coming. He looked over towards Ron, who was oblivious to everything as he stared into his cauldron, scratching his head. Hermione sent him a sympathetic glance as she stirred her own potion.

"And what is this supposed to be?" Snape asked, raising an eyebrow as he peered down his long nose into Harry's cauldron.

"Black Fire Potion, sir," he answered frostily, gesturing slightly at their instructions written across the board. Snape shot him a glare, issuing a small hmph at his tone, before he straightened. Black Fire Potion was supposed to be amber in color, and quite thin. Upon drinking, it would make the drinker able to walk through black fire without injuries. Harry sat still, taking a deep breath as Snape shifted behind him.

"Hardly," he said icily, "Count yourself lucky there will be no practical implementation for today's potion," he continued, cleaning out Harry's cauldron entirely with a flick of his wand. "You would hardly shield yourself from the heat. Five points from Gryffindor," he finished, turning his back. Harry scoffed, flushing as he got ready to fight back. Hermione shook her head slightly, but Snape seemed to already have noticed. "For pure incompetence," he sneered, before making his way back to his desk and sitting down in a flurry of black robes. "Time is up," he called to the entire class. "Bottle your samples and put them properly labeled at the front of the class," he dismissed them with a wave of his hand.

Harry packed his bag, throwing his book and supplies rather roughly against the cloth as he grumbled. Ron clapped him on the back. "Cheer up, mate," he tousled his red hair with an easy going smile, probably happy that the class was finally over. "After this year you'll never have to deal with that greasy old sod again outside of Order meetings,"

Harry chuckled once, adjusting his glasses as he glanced over at Snape's desk. Black eyes met green and Harry flushed slightly. "If I should be so lucky," he muttered, looking back down and swallowing. "Lunch?" He smiled, nudging Ron in the ribs, knowing his friend was always eager for his next meal.

"Oh hell yeah," he laughed, putting an arm over Hermione's shoulders as she rolled her eyes at the two of them.

"Language, Weasley," Snape warned from across the room.

"Sorry, sir," he answered, not sounding sorry at all, but quickening his steps all the same in an attempt to hurry along their escape from the dungeons.

"Potter, stay. I need to speak to you," Snape continued, meeting his gaze. Harry sighed, running a hand through his already messy hair.

"Yes, sir," Harry replied glumly, casting a longing look at his friends.

"We'll save you a seat," Hermione said softly, trying not to look at Snape as she smiled softly at Harry before Ron towed her into the hall and the door closed with a soft thud, leaving the two black haired men in silence.

"Sir?" Harry said flippantly after a few seconds, making an impatient noise in the back of his throat as the older man kept grading papers without looking up.

"You can drop the formalities, Potter, it is just you and I now," he said coolly, finally glancing up at the boy with a hint of a smirk on his face. Harry rolled his eyes.

"Did you actually want something, sir?"

Snape raised an eyebrow, stretching as he pushed away from the stack of papers on his desk. "Still so cold," he said, voice pitched low. Harry picked up on his slight teasing but chose to ignore it. "Some might think you actually dislike me,"

"Well, you make it so difficult," Harry threw back at him sarcastically, rolling his eyes, but unable to stop the edges of his lips from curling upwards.

Snape scoffed, "It's not my fault you do not know how to fake a normal level of potions mastery without completely destroying whatever it is you are attempting to brew,"

"Oh, I assure you, that much I am not faking," Harry grinned ruefully as he heard the lock in the door click as Snape no doubt uttered a wandless spell. He dropped his bag onto the floor with the soft clinking of glass and sat down on the edge of Snape's desk, stretching his legs out in front of him.

He raised an eyebrow as he watched Snape take in his jean-clad legs, knowing full well that the Potions Master enjoyed him in his muggle clothing. He stretched, arching his back as he sighed, the picture of comfort in the dark classroom. "Do make yourself comfortable," Snape drawled, standing up and leisurely making his way around his desk to where Harry sat. He raked a hand through Harry's hair, bringing it down to cup his cheek for a quick moment.

"Come," he said briskly, turning and opening a hidden door that led to his private office.

Harry smiled coyly, detecting the faint hint of arousal in Snape's voice; it was a little deeper, a little more gravelly. He looked up at the other man through his lashes as he drew closer, black eyes burning. "So you did want something," Harry said quietly, shifting slightly to make himself more accessible. "Sir," he added, smirking at the growl issuing from Snape's throat.

"Need is a better suited term," he answered, only a sliver of open space left between them.

"Oh?" Harry asked, feigning an intense curiosity. He wanted to know, it was true, but there were...other things he wanted more in this moment.

"I've not seen you in...what? A week and a half? Tsk, tsk, Potter," he continued, voice deep and laced slightly with the ominous tone he usually took on when handing out detentions.

"S'not my fault you went out the one night I had free of studying. NEWTs are kind of a big deal, Professor," Harry teased lightly, looking down at his hands as he spoke. He looked back up through his lashes, winking once.

"Yes, I will ask the Dark Lord to next time take into account my sexual agenda while planning his meetings," Snape drawled dryly, bending to rub his lips along the edge of Harry's jaw. Harry sighed, trying to keep his thoughts coherent while he still could.

"Sexual agenda?" He wrinkled his nose at the words, pulling back slightly from the other man.

"Mmm, what would you rather I use?" He muttered against Harry's neck, bringing his hands up to push his robe off of his shoulders.

"Oh, I can think of plenty ofthings for you to use," Harry grinned, swinging his legs off the desk as he turned and pulled Snape towards him so that he was standing in between his legs. He arched playfully into the other man's body, feeling the evidence of his playful flirting twitch against his thigh. Harry thrust a hand between them, squeezing Snape's cock through his robes. Snape growled, biting on the earlobe he had been kissing and slamming himself into Harry's body. Harry deftly unbuttoned the long trail down Snape's torso, having become skillful in his desire to rid Snape of the cumbersome outerwear in recent months. He shoved the cloak to the floor, where it pooled around the older man's feet.

Snape grabbed his chin roughly, pulling him close and crushing their lips together. His tongue explored Harry's mouth, taking in his soft moans as the familiar taste of Snape reached his lips. Harry fumbled with the hem of Snape's plain black tee shirt. The older wizard broke their kiss, breathing slightly heavier than before as he leaned away slightly and lifted his shirt over his head, throwing it on top of his and Harry's robes, before lifting off Harry's shirt and adding it to the pile.

Snape turned his attention back to the younger wizard, knotting a hand in his messy black hair as he grinded against him, pushing him back on the desk until Harry was propped up on his elbows. Harry scrabbled at the black hair as Snape ducked his head and kissed Harry's smooth chest, stopping to draw a nipple between his teeth. He dragged the air in over his teeth as Snape bucked into him, pausing in his work to look up at Harry's lustful green eyes.

He smirked slightly, trailing a long finger down his torso and hooking it in the waist of his pants. Harry swore softly, bucking his hips involuntarily. Snape chuckled darkly once, swiftly undoing the buttons to Harry's jeans and pulling them past his now prominent erection. "My, my," he said quietly, tracing a finger down the inside of one thigh and up the other, careful not to touch Harry's length. "No underpants? We are presumptuous," he drawled, yanking his pants the rest of the way off before standing and quickly getting rid of his own. He laid his body fully against Harry's, making the younger man squirm from his place on the hard wood of the desk. A groan fell from Harry's lips as Snape reached down and stroked him leisurely, licking Harry's bottom lip as he closed his eyes.

"Severus," he breathed, clawing his nails into the older man's back, scrabbling to try and get them closer as he moved, rubbing their cocks together. Snape grunted, biting on Harry's collar bone as he ran a finger around his opening, preparing him. Harry bucked into his hand, impatient.

"Fuck me," he whispered, tugging on Snape's long hair until he raised his head to look at him. He met the black gaze defiantly, looking from one eye to the other as he tried to discern the other man's intentions. Don't pick today to be gentle, he pleaded mentally. He saw a spark in the onyx eyes, and a low growl escaped those thin lips as he abandoned his ministrations.

"If you insist," he said coolly, only the slight hitch to his breathing giving away his less than calm demeanor. He wrapped a strong arm around Harry's middle, the fingers of his other hand digging into his hip as he pulled him from the desk, flipping him around until his hands were pressed flat on the wood. He nudged Harry's legs apart with his thigh, setting himself square behind him. He pushed the head of his leaking cock into Harry's tight hole, gasping slightly before pulling back out.

"Bastard," Harry ground out, panting heavily. He heard Snape chuckle once behind him, in between his harsh breaths. He grunted loudly as he pushed back into Harry.

"Oh, fuck," he moaned, arching his back into Snape as they moved together, Snape thrusting hard and fast into him. Severus tightened his grip around Harry's mid section, pulling him flush against his own chest and removing his hand from its spot on Harry's hip to wrap around his cock. He pumped him hard, biting down on the back of his neck as Harry reached back and held on to his shoulders tightly. He laid his head against Snape's shoulder, closing his eyes as his long black hair cascaded over the side of his face with his movements. He angled his head and licked the underneath of Severus' chin. "More," he whispered, and all of a sudden he was on his back, pushed against the desk, legs spread around Snape's hips. He hooked his calves together, pulling Severus down against him and digging his nails into the cleft right at the base of Snape's spine.

"Ngh," Harry dragged his nails up Snape's back, feeling a hand knot into his hair, tugging at his scalp. He turned his head slightly, bracing his hand against Snape's bare chest, putting just enough space between them to look into his face. They locked eyes, long black hair forming a curtain to frame their faces, making it seem almost like there was nothing in that moment but the two of them.

Snape was breathing heavily, grunting hoarsely as he reached in between their bodies to grab Harry's shaft tightly. He gasped, fingers curling against Severus' chest as he pumped him, and Harry could feel the heat curling in his stomach. He met Snape's eyes, a strangled cry leaving his lips as he came, splashing hot liquid between the two of them. He arched his back once more into Snape, tightening his legs around the other man's hips as he shuddered slightly and finished, spilling himself inside Harry.

They were both breathing heavily, Harry slowly relaxed his legs as Snape slipped out of him, muttering a quick cleaning spell before he collapsed over Harry's chest, grazing his teeth over Harry's neck as they tried to regain their breath. Harry smiled while Severus couldn't see him, breathing in deeply the scent of sex and sweat. He rubbed his hand absentmindedly down Snape's back, content with the man's weight pinning him down. He sighed slightly, Severus finally standing up and casting a more thorough cleansing spell on them both.

Harry stretched, grabbing his jeans and pulling them up lazily, watching as Severus clothed himself. Snape caught his gaze and arched an eyebrow, pausing in his movements.

"What? Am I not allowed to enjoy the show now?" Harry smirked, pulling his shirt over his head.

Snape snorted, picking up his robes and getting to work on the long line of buttons. "I am not even going to deign that with an answer, Potter,"

Harry rolled his eyes. He wasn't sure he would ever get used to Snape's cool demeanor, even after sex. It wasn't...normal. But it was purely Snape. He shrugged, thinking back to their slightly awkward conversation the month before. Severus had assured him he would never sleep with someone so repeatedly just for the sex, which Harry assumed was the closest he'd ever get to Severus admitting to going steady. Especially with someone like him. He also knew that Snape was not one to stay just for the sake of staying. He didn't tend to spare other people's feelings.

"Your friends are probably going to think I've killed you," he said flatly, tidying the papers that had fallen from his desk as Harry picked up his school robes.

"They'd believe that before they believed this," he murmured in response, waving vaguely between them as he fastened his cloak around his shoulders.

Snape nodded once, unable to disagree with the younger man. He walked over to Harry. "You are inside out," he murmured, playing with the edge of his collar. "Honestly, you can't even dress yourself properly," he brushed his cloak down along his shoulders, hands hesitating as they sat on Harry's shoulders. He leaned in and kissed him once more, moving to cup his chin with his hand.

Harry sighed slightly as he pulled away, following him to the door. "When will I see you again?" He asked, hating how forlorn he sounded even to his own ears.

Snape, surprisingly, didn't comment on his tone. "I assure you class on Thursday is not cancelled," he drawled, the hint of a smirk playing along his lips.

Harry scowled, glaring slightly. "You know what I mean, you ass," he rolled his eyes.

"Detention. Saturday night," he held a finger up to Harry's lips to stop his protests. Harry darted his tongue out and licked it, not missing the way the onyx eyes flashed. "And Sunday," he added, "For calling me an ass,"

"But Saturday's the game!" Harry whined, "We're having a party in the common room Saturday night, and I'm the Captain, I can't-"

"Potter." Snape interrupted him with a quizzical glance. "You haven't won yet,"

"Well, yeah I know, but it's Hufflepuff, I mean we've got it in the bag, and their Seeker? He can't even dive properly without nearly falling off his broom. How they expect him to ever catch the Sni-"

The index finger was back, effectively ending his Quidditch rant. "I guarantee to make it up to you should you win the game," Snape purred, an actual smirk gracing his features. Harry glared, knowing he had lost this one and not exactly unhappy anymore about missing the common room party. There would be more.

"Now go on, run along to your little friends and tell them how wickedly cruel and unfair I am," he opened the door, ushering Harry out. Harry stuck his tongue out at him as he left, before planting an unhappy glare and a pout on his face as he made his way back up to the Great Hall.

He could see a number of students around the lake, meaning he had nearly missed lunch completely. He took a deep breath, preparing himself to go back to hating the greasy haired potions master. His hair is actually very soft, he mused to himself as he walked. He shook the thought away as he spotted Ron and Hermione, waving him over a little less enthusiastically than normal once they took in his face.

"That man," he fumed, proud of his ability to convince his friends nothing had changed. It hadn't been that hard after all. Him and Snape might have found a way to get along - to put it lightly - but that didn't mean he loved every aspect of his being. There were still a lot of things he couldn't stand about the other man, he'd just decided they weren't as important anymore. If he focused on those things, he was usually able to muster up enough legitimate annoyance. "Is the biggest git I have ever met," he finished, slamming himself down onto the bench next to Hermione.

"What happened?" She asked delicately, not wanting to anger him further.

"He went on and on about how incompetent I am and how I don't deserve half of what I've been given," he fumed, finding it easier to go on once he got himself started. "Apparently I've never worked for anything a day in my life and scraping cauldrons after the game Saturday and then again on Sunday is the way to teach me my lesson," he dropped his head into his arms on the table.

"Sa'urday?" Ron asked, around a mouthful of potatoes.

"Honestly, Ronald," Hermione rolled her eyes at him as she wrapped a consoling arm around Harry.

"But that's the game! You're gonna miss the party and everything! You're the captain!" Ron cried, indignant.

"That's what I said. He doesn't care," he picked his head up and pulled a plate across the table towards himself and piled it high with roast chicken and vegetables. "Which is not surprising," he grumbled. "I just wish we were playing Slytherin so that I could wipe that smug smile off his face,"

Hermione gave him a sympathetic smile, rubbing his arm as he ate, all three waiting glumly for their next class to start.