Temptation

Summary: The newest Hogwarts Professor is nothing like the rest of them. She was youthful, smart, funny, and sexy. Sirius Black would definitely be playing close attention this year. Sirius/OC

Disclaimer: I own nothing Harry Potter

Chapter one: Hogwarts is where the heart is

Sirius Black stuffed his hands in his coat pockets and kicked some dirt around with his feet. He was waiting on his best friend to finish saying his 'hello's to his new girlfriend, who he hadn't seen all summer. James Potter and Lily Evans stood behind a pillar, lip-locked in a passionate kiss while Sirius was forced to be their look out. That wasn't what was really bothering him. After all, he knew James would do the same for him. In fact, he had done the same several times in the past.

Sirius scanned the crowded of students rushing to catch the train to Hogwarts School of Witchcraft and Wizardry. A group of girls walked by giggling and pointing at Sirius Black no doubt labeling him a legend among these students. He put on a dashing smile for them. It was no surprise that everyone in this station had heard of the infamous Sirius Black and his friend, the Marauders. The jokes and havoc they wreaked among the school grounds had not gone unnoticed over the past sixth year, but this year just felt different for Sirius.

Maybe it was the realization that this was his last year of freedom until the responsibility hit him. He tried talking to his friend about it, but James just doesn't have the worries Sirius held. After all, James was the heirloom to the family fortune while Sirius had long been written out of the will. Not that he regretted his decision by any means. It was just the stress of being an adult hitting him all at once. This was going to be one gloomy year at Hogwarts.

"You're the prettiest most amazing girl in the whole school. And I am the luckiest bloke to walk the planet." James gushed as him and Lily walked from around the pillar. Doesn't he know you can stop lying once you get the girl?

"Jaaaaames." Lily drawled out his name, but clearly she now loved the attention from James that she had once hated. Sirius was happy for his friend. After all, no one thought it would happen, but he couldn't help but feel like a third wheel. James pulled Lily back into his grip letting her rest her head on his broad shoulders.

"Let's go find Remus and Pete," Sirius suggested wanting to add more people to the group so it wasn't as awkward. The train ride was exactly the same as every other year at Hogwarts except Lily had been named Head Girl while Remus was named Head Boy so they were dismissed to a prefects meeting.

James and Peter Pettigrew sat with Sirius in their usual compartment talking about the latest Quidditch standings. Well mostly James and Sirius talked while Peter agreed to everything they said. They continued this way to the castle, and almost right up to the Sorting Ceremony.

They walked into the Great Hall, and Sirius immediately began taking everything in about the place as if he was one of the first years. He wanted to remember everything about his last year in the one place he felt comfortable. They took their usual seats at the Gryffindor table as Remus and Lily rejoined their group.

James kissed Lily's forehead and whispered into her ear making Sirius look away awkwardly. This was still going to take some getting used to. Luckily the ceremony started. The first years were led into the Great Hall looking excited and nervous to begin their school career. Gryffindor gained 15 new students before the other houses even had 10 so their table cheered and clapped welcoming the newbies to their family.

When it was all said and done Dumbledore stood up to give is annual speech about dos and don'ts among the campus. Sirius pretty much tuned this out. He didn't mean to be disrespectful to Dumbledore, but he had heard this speech six times already. He eyes roamed over the room looking at all the students. His ex-girlfriends/ex-flings filled the Gryffindor table. Several of them glanced back at him when his eyes were roaming, but he made nothing of it. There was a reason those girls were labeled ex's. His eyes continued to search the room. They ran all the way across the professor's table when something suddenly stopped them.

There was a young girl sitting with the professors. She couldn't have been more than 22 or 23 years old, and she looked totally out of place among the scholarly professors around her. For some reason Sirius observed every nervous shift and twist this girl made. Her blonde hair was pulled back into a bun as if she was trying to make herself look a few years older. She had glasses, and they magnified her green eyes. She was definitely a new addition this year.

He watched McGonagall lean over and whispered something to the girl, who just nodded still wearing her nerves right out there on her sleeve. Sirius wanted to know who she was. "Lily," Sirius hissed leaning around James trying to get the red hairs attention, but she was hanging on every word Dumbledore said. Sirius reached around James and tapped the girl, "Lily!" She shushed him and he knew he would have to wait until Dumbledore was done so he tried to tune back into the speech.

"Before the feast begins, I would like to introduce you to the newest professor, Professor Doster." Sirius watched as the young girl stood up before the whole student body looking terribly out of place. Most people were too stunned to clap, but Dumbledore continued, "She will be teaching several classes on campus to help out over swamped Professors. Please make her feel welcomed." Sirius tuned out again as he watched Ms. Doster sit back down looking slightly flushed. She tried to focus on Dumbledore, but her mind was clearly thinking about that introduction. She was so young to be teaching students.

"Dig in, Padfoot." Sirius's attention was brought back to the table by Remus motioned to the food in front of him. He nodded slowly turning his attention to his table's conversation.

"I can't believe you guys haven't heard about her. It's been all over the daily prophet." Lily gushed in a harsh low voice, "Her name is Alison Doster. She was a fifth year when we were in first." She paused to take a sip of her pumpkin juice, and Sirius leaned in closer to hear her, "Her uncle is the Minster of Magic. There were rumors flying all over saying he forced Dumbledore to give her the job which I doubt anyone could force Dumbledore to do anything." She took a bite from her plate, chewed than continued, "I mean, she was a very bright student, but she is just so young. It was no surprised controversy transpired. Still here she is; our new professor. Well, not a real professor, she's more like a professor Slughorn's extra hands." From the tone of Lily's voice it was easy to tell she didn't all the way approve of someone so young teaching her, but Sirius knew she wasn't going to say anything else about it.

They ate the rest of their meal listening to each other spill about their summer vacations with Sirius glancing at the Professor's table every so often, but soon their meal was over and it was time to move to the common rooms for the schedule distribution.

"Come on," Lily pulled on James's hand, "I want to get an actual seat." They all followed the happy couple up to the Gryffindor common room where it was already packed. Lily's hope of a seat was unquestionably dashed.

"Let's get started," Professor McGonagall entered the room behind them, "As soon as you get your schedule please move to your dorms. No dillydallying around. We are already packed in here." She pulled out a clip board and the six year prefects stood next to her with the schedules in hand. "Starting with first years." The Marauders and Lily all turned to each other knowing it was going to be a while before their names were called.

"So," Sirius started, "The new Professor is pretty hot, eh?" Remus grinned, and James nodded earning a slap on the arm from Lily.

"This is exactly what people were afraid of. You guys are only fueling the fire." She pointed her nose in the air and crossed her arms across her chest.

James laughed wrapping his arm around her shoulders, "Don't worry. You're still prettier." Sirius couldn't help but wince. Even he knew that wasn't the right thing to say to her. Surprisingly, Lily just pushed his arm off of her instead of yelling like she would have before they were dating. Things between them were clearly changing and quickly too.

"I don't see why we can't appreciate good beauty," Remus chimed in, "Especially if people are already prepared for it. Besides not like any of us have a chance."

"But that doesn't mean we won't try." Sirius smirked.

"Sirius Black," A voice cooed from behind them. All five of them turned to see Misty Hopkins. Sirius wasn't sure how everyone in the whole school could wear the same uniform, but somehow Misty made it look ten times more astonishing. The girl walked up to Black with an award winning smile. "We better have as many classes together as we had last year. I just don't know what I'd do without my charms study buddy."

"Yeah," Sirius couldn't help put let his eyes roam over the girl's curves, "That would be great." He watched her walk away.

Remus punched his arm, "Looks like you won't need the new teacher." Sirius shrugged.

The Common Room was becoming less crowded by the second soon there were only seven years left. They were finally able to get seats on the couches. "Black, Sirius." His name escaped Professor McGonagall's lips. Sirius retrieved his schedule and hand back to his pack of friends.

Sirius groaned, "History of Magic and Ancient Ruins back to back. I don't think I can live in the past for that long."

"At least you have Potions after," James pointed out as Lily escaped his arms to retrieve her schedule, "Potions is a more active class." When Lily returned Sirius didn't even bother comparing their schedules, her and Moody would be in advance classes. James, Sirius, and Peter would not be.

"Potter, James." James hurried to get his schedule and scampered back. They immediately began comparing, "Victory! All but one!"

Sirius frowned looking over James's schedule, "Since when are you in advance charms?"

James shrugged, "I'm as surprised as you are." His eyes lit up, "Wait, I bet Lily is in that class." Sirius chuckled to himself as his friend bounced off to find his new lover. This was going to be one interesting year.

A/n: Start of a new story! I am not forgetting my other story…I have been working on both of these for a while and I felt it was time to post this one! So let me know what you think! Review!