Disclaimer: I don't own anything of Harry Potter.

Note: Second plot bunny bit so you get two stories in a relatively short order.

Warnings: Slash and sex, wall sex.

Summary: Harry Potter returns to Hogwarts as a Defence Professor, thinking that at least one thing will be consistent between Potions Master Severus Snape and himself and that is the mutual dislike, but how will Harry deal with Snape suddenly changing tactics and flirting with him? Especially the first evening as a staff member at the welcoming party. Will it really be as innocent as Harry thinks it is?

Come on Harry, you're an adult and a Professor, you studied for this. These people have seen you throughout the years and have taught you, there is no reason to be nervous.

Taking a deep breath Harry Potter, Defence Against the Dark Arts Professor, pushed open the door to the Hogwarts Staff Room. Today was his first day as a Professor at this school. It was almost six years since he had defeated Voldemort and Harry had returned to finish his seventh year before going to University in Falmouth to study wand lore. After that he had done his mastery in spell casting in Edinburgh. When Headmistress McGonagall had asked if he had wanted to return to Hogwarts to teach, Harry had jumped at the chance.

Now that University was over Harry had been a bit lost, his friends had all settled down and started their own lives and Harry was keen to do the same. University had opened his eyes to more then just the directions Harry could go in that had nothing to do with the chasing dark wizards and working for the ministry but Harry had also discovered he was gay. Safe to say the last few years had been a rollercoaster and Harry was more then ready for some normality and a feeling of belonging and home and he knew Hogwarts would deliver that.

"Ah Harry, I am so glad to see you." Harry was a bit taken aback by the sheer number of staff present.

"You finally return, Harry."

"And now as a Professor…The students will be so excited." Professor Flitwick, Madam Hooch and Professor Sprout were the first to welcome him and Harry smiled shyly.

"Thanks, I thought to time it right with the Staff Welcoming Party." Harry had not expected quite so many people. The Headmistress had told him to arrive a few days early before the students arrived so he could get settled in and arrive just before the staff welcoming feast, which she told him dryly was always held at least three days before so the staff could recover as well from the feast before the students arrived. Harry wasn't sure if he should laugh or not. It was strange to be on a first name base with many of his old Professors but at least there would be one consistency.

"Well congratulations, Potter, I am glad that your years at University have taught you to latest tell time. We are honoured by your presence." Harry bit back a relieved smile at the deep voice. Luckily his relationship with Snape would be same as during his days as a student.

Well perhaps not entirely the same as Harry had matured a lot and after the war Snape and he had settled in mutual dislike with a hint of respect for what the other had done during the war, though Harry was learned more towards intense liking rather then dislike. During his seventh year he had an intense crush on Snape, though he never acted on it and his time at University had taught him to see things from a new perspective, for which he was glad. He had learned to respect Snape for what he had done during the war and came to understand the actions the other man had done and the choices he had taken.

He turned on quick feet to the door and had to bite back a whimper of need at the flash of arousal that shot through him. Six years away from Hogwarts had not prepared Harry for how bloody fit Snape looked. Peace agreed with the Potions Master as Snape was still lean and pale but no longer gaunt and the other man had filled out. The dark eyes were regarding Harry and glittering oddly. And it bloody suits him, especially the cut of his robes these days…

Snape now wore robes that were tailored to his body and did nothing to hide the long legs, the thin waist and the broad shoulders. Harry was quite sure he could learn to appreciate Snape's new robes but boy, he was also in a world of trouble if this continued. Come on Harry, get your head on straight,

"Hello, Professor Snape, I am sure I can talk all evening of what other things University has taught me."

"Well, if the newspapers stories are even remotely true, I am sure it will be a riveting tale." Snape purred.

"Severus, be nice, you promised." The Headmistress sighed as she stepped into the room.

Snape rolled his eyes and then said. "If I was being any nicer, I would be kissing Potter. Not sure you would like me to get quite so tactile while you were in the room." Harry bit back a cough at that particular image sprang to mind. When the other man turned away with a smirk to say. "I am quite sure precious Potter cannot handle that."

Harry bit back a moan when Snape brushed his arm on his way to the table with drinks and he caught the whispered. "Or me." The dark eyes were almost daring him to rise to the bait and Harry looked away. He looked around the room, trying to get his bearings and buy himself time.

What the hell is Snape doing? It is almost like he is flirting with me….but why….why would he do that? Merlin, if this continues I won't last the term, actually I may not even last the night.

"Here." Harry was tossed violently from his thoughts as a drink was held out to him. He took the glass, looking up startled as Snape clinked their glasses and said. "To a new beginning." The other man held his eyes and Harry took a sip, coughing as the fire whiskey burned its way down his throat.

"First piece of advice, Potter, alcohol makes teaching a lot more bearable and one of the big perks of joining the staff party is that the Headmistress brings out the good alcohol to ensure we all get along again."

"Well, some of us need more reminders then others, Severus. What was that one rule that Albus had in place, to not hex your colleagues?" Harry bit back a grin as Minerva came over to join them.

"Excuse me, I never hexed a colleague. I came close, mind you, and I may have dabbled into voodoo arts to try to get some of the dolls going but never more then that."

"Need I reintroduce that rule now that Harry is at Hogwarts?" The dark eyes met Harry's for a brief second, Harry taken aback by the sheer heat he saw before Snape said in response to Minerva's question.

"Don't worry, Minerva, any hand I lay on Potter will be purely for pleasure…Besides, I managed to not hex him while he was a student and I can promise you the urge was far greater then that it is now." Harry choked on the fire whiskey again and then muttered a soft excuse, glad when Hagrid entered so he had an excuse to go and talk to his friend. Snape's deep laugh followed him.

Hp

The rest of the night Harry did his best to try and stay clear from Snape. The other man confused him with the way he was behaving and so Harry did the only thing he could do to deal with the situation, he drank, a lot. He wasn't the only one as it seemed that this was a rare time for the staff to let their hair down and relax amongst peers and friends. Harry thoroughly enjoyed himself speaking to the other staff and soon he was engaged in a heated discussion with Professor Flitwick about spell work and the recent theories.

"Ah Severus, Harry was just telling me about his thesis project. Did you know he developed a spell to help young children talk about traumas that happened to them by allowing drawings to come to life? It is really quite revolutionary." Harry turned to look at Snape, a bit apprehensive about what the other wizard would think. He had been very proud about his work and after University he had spend a year working with St Mungo's and other hospitals to perfect the spell and help young children. But Harry had to step back to now allow the healers to carry on the work, and for that he was glad.

"I am familiar with his work. I followed it quite closely and I was acting as consultant for St Mungo's to help perfect the potion to help children who had lost the ability to speak to work through their trauma. It is used in combination with Harry's spell. It was a rather innovative use of spell work and I was surprised you didn't want to follow up with it, Harry."

"I…I had enough of the trauma and wanted a different direction. I have done my work and now it is in the hands of the healers. I think with Draco Malfoy as the lead healer on it, it can go very far." Harry had to bit back his grin at the rare praise and also the use of his given name. He wouldn't mind hearing his name more from Snape. Preferably if he moans it or growls it in pleasure in that deep voice of his.

Blaming his drunkenness Harry realized he should really stop drinking as he shifted to try and hide his arousal. He glanced down when a glass was pressed in his hands.

"It is water. This is the second piece of advice, to drink a glass of water now and then so you can pace yourself better and last longer." Harry drowned the glass, licking his lips to clear the droplets. He raised his eyes to meet the dark eyes as Snape's eyes lingered on his lips before snapping up to meet his own.

They seemed to drawn him in and Harry was sure he was going to do something stupid like kiss Snape when he startled badly as music suddenly sounded from a old music box that had not been there a second ago. It didn't seem to take anyone else by surprise as the staff made a circle in the middle and Flitwick took Professor McGonagall to the dancefloor.

"And that is my cue to leave, this will continue for a good two hours so unless you are into dancing then may I suggest we retire to something more private for more drinks?" The warm breath that teased his ear and the hand that came to rest on his hip made Harry lean back slightly.

"I like to dance." He said, feeling Snape stiffen slightly behind him and then Snape pulled away as if burned..

"I apologize for my actions then, I…" Harry turned and slipped an arm around Snape's waist as he smiled and said.

"But I like my dances like the young people do, grinding in a club, not like this. Unless I am with the right partner, then yes I do also like to dance like this as well. But I don't have the right partner yet…" Harry was drunk enough and if Snape had been flirting all night with him then he should take the next step. "Can you be that partner, Severus?"

The dark eyes grew darker as Snape leaned in to whisper. "Shall we find out?"

Harry nodded breathlessly and then he was pulled from the room. He looked behind him, intend on saying goodbye as he dug his heels in. Snape turned to him and then said. "Don't worry, they won't miss us. Pomona retired with Rolanda hours ago."

That made Harry pause and he frowned. "What, Professor Sprout and Madam Hooch are together?"

"On occasion, I believe they call it an open relationship. While I applaud their courage and how they make it work, that would not be something for me. I demand fidelity from my partners." The dark eyes bore into his and Harry nodded.

"Yes, I do too…" How they had stumbled onto this topic Harr didn't know but as pleasure flared in the other man's face, he realized he didn't mind.

"Good, I have to admit that this has taken me by surprise. I was not expecting this when you returned to Hogwarts…Harry took steps back as Snape pushed him against the wall, leaning into his space in a way that was more then acceptable to Harry.

"I was thinking that the only consistent part of returning to Hogwarts would be you and how our relationship was…" Harry shut up as Snape kissed him.

"Do you want to return to me hating you and have hot passionate sex in the mean time? Hate can make a strong driver and make up sex after a fight is one of the best kinds of sex…" The lips kissed him again and then Snape continued. "Or do you want to be my lover in truth and see what other mutual feelings there may be between us?"

"So no hot passionate sex?" Harry bit his lip at how desperate he sounded and Severus laughed, his hand dropped down to Harry's hips as the older wizard pulled him against his body so Harry could feel how hard Snape was. The other man moved to s suck on Harry's neck and Harry groaned, hand burying in the long hair to pull Severus closer. He had trouble focussing and it wasn't only because of the drinks.

"Make up sex?" He was getting desperate for an answer as he stroked his hips against the firm thigh that was suddenly there.

"I am sure that we would have fights even if we are madly in love, but just in case of that it has escaped your notice, I am trying to set a mood." Severus straightened and then swooped in and Harry was kissed thoroughly. He relaxed into the lips that nibbled along his and when Severus angled his face for better access, Harry groaned and parted his lips, inviting the other to deepen their kiss.

His hands were busy trying to find skin to skin contact. He finally managed to tug Severus' jumper up and ran his hand up the man's back, lightly scratching and Severus bit on his lip lightly, telling Harry just how much he liked it. "Your rooms or mine?" Harry panted against the other lips, seeing the smirk that was so arousing.

"Can you contain yourself for the long walk?" Harry took a deep breath as Severus stepped back, trying to calm himself down. It took several breaths but the edge was a bit further away as he began to walk after Severus, following him to the dungeons. That was until Severus wrapped an arm around his waist and bend his head to kiss him as they walked. The other man nuzzled at his neck again and Harry groaned.

"The wall…" The other man stumbled, head snapping up as the dark eyes met Harry's.

"You sure?" He growled and Harry nodded, licking his lips.

"Yes, I can't wait that long and my rooms are one long rooms of boxes."

"We'll have to be quick, the staff party is almost over. It…" Harry fell silent as Severus leaned in to run a hand down his cheek as he confessed. "It wasn't what I had in mind for our first time."

"Perhaps the next time we can take our time." Harry smiled. It revealed something that Harry was beginning to see and that Severus actually returned his feelings. It made his heart beat quicker in hope.

"You do have excellent ideas." Harry grinned, running his hands up Severus' stomach but the other man shook his head with a wicked smile.

"It does come with some drawbacks, no undressing, we don't have the time. I rather spent that time preparing you. Pants off!" Harry had never complied so quickly with any command Severus gave and within moments he had stepped out his trousers and was kicking his boxes away. The dark eyes devoured him and Harry kissed Severus again as he undid the other man's fly. The cock that sprang free made his mouth water and he gasped.

"You go commando?"

"You can find out tomorrow morning what my underwear preferences are." Harry stroked a hand up the thick shaft and Severus threw his head back. Harry had never seen the man so undone and he couldn't look away.

Severus kissed him hard and hissed. "Turn around." The cool stone did little to ease Harry's arousal and he tensed when a slick finger circled his hole. It had been a while since he had been intimate with someone and Severus pushed in slowly. "Bear down…" Lips trailed his neck and Harry forced himself to relax.

He turned his head to engage Severus in a kiss and he groaned as he was stretched, it didn't take long for Severus to add a second finger and a third, slowly working them in and Harry had to force himself not to fist his own cock. He was quite sure Severus wouldn't be impressed if he did that.

He was painfully hard and he knew he couldn't last much longer. When Severus withdrew, Harry turned around to see the arousing sight of Severus applying lube to his own cock. It was too much for his self control and he touched his own prick.

"Do not dare." The command startled him to see the narrowed dark eyes. How Severus was so focussed when the man was lubing up his cock was beyond him, and Harry chewed on his lip.

"Only I get to touch that." The other man added, and Harry nodded breathlessly. The kiss he got in response was so hot and Harry glanced down as he said.

"Then you better get a move on, otherwise I will be touching myself." Severus' lip curled into a smirk as he said.

"You dare? But don't worry, I'll soon have you begging for more." One slender finger made a rotating motion and Harry shook his head.

"I want to see you." The dark eyes widened in pleasure and then Severus stepped up to him. Hands curled under his thighs and Harry jumped to wrap his legs around Severus' waist. The other man balanced him against the wall, Harry's hands on his shoulder as Severus lined his prick up with Harry's slick hole.

Harry closed his eyes and Severus engaged him in a kiss when the blunt tip began to push in. He bore down on the pain that soon gave way to pleasure. Severus was tense and Harry knew the other man was trying not to move too quickly. Kissing Severus and biting lightly on the other lips got the message across that Harry was getting impatient and Severus growled like a jungle cat.

That was so arousing that Harry began to move and soon Severus was sheathed to the root before he pulled out and thrust back in. Harry met him thrust for thrust and when the other man's hand wrapped around his cock to start pumping it in time with the thrust was enough to make Harry come in a flash of white heat and a shout of Severus' name.

Severus followed him a moment later with a growl of Harry's name that almost had him hard again. Severus collapsed against him, face buried in Harry's neck and Harry patted the other man's shoulder. When the Potions Master turned to look at him Harry smiled shyly and said. "Hey.."

"Hey yourself." Pressing a light kiss against Harry's lips Severus stiffened as voices rose in a song two corridors over. They pulled apart, Severus carefully pulling his softened cock out and Harry limping to get his trousers. He quickly pulled them on, taking a leaf from Severus' book and stuffing his boxers in his pocket. He turned back to Severus, not sure how to act around the older wizard now that it was over.

"I have an excellent bed for after cuddles and it will do wonders for your back the firm matrass." The hand that splayed over his arse that pulled him into a kiss made Harry realized he had nothing to be worried about. He grinned and kissed Severus.

"Gentlemen, I think it is time you take that to your own private rooms!" The Headmistress' voice and the other whistles made Harry hide his face in Severus' shoulder. This was not how he wanted to make his first impression as a Professor.

"I have been on my best behaviour, Headmistress but even I have my limits. It is not my fault that Potter grew up to be such a fine outstanding young wizard." The deep voice rumbled through Severus' chest and Harry blushed as he met the dark eyes. They shone with pleasure and he grinned and then said.

"I am sorry Headmistress. I just wanted to get off on the right foot with Professor Snape now that I am a Professor here."

"Oh, you got me off on the right foot alright." The heated whisper and the tongue that licked at his ear made Harry lightly slap Severus as he said. "Behave."

"Make me." Harry untangled himself from Severus reluctantly. He was sure they wouldn't make it anywhere otherwise. The Potions Master ran a hand through his hair and then said. "Shall we retire Professor Potter?"

And as Harry accepted the hand that was held out to him, he was quite sure he was in for a lot more then just flirtation and as he met the dark eyes again, he couldn't be happier.

Finite Incantatum

So, this turned into a plot bunny in wrote in 3 hours and turned into just sex. I hope you enjoyed it and please do leave a review.