This is written for LJ's 30 lemon challenge, so is more smut driven than plot driven. Enjoy.

Prompt: First Timers, or, "Yes! I'm Finally Getting Some!"

Sirius wasn't good at friends. Well, girls that were friends. Sirius liked to snog, pet, shag, and everything in between. Sirius was good-looking. It was completely natural that Sirius should be unable to keep platonic relationships just that. Marlene McKinnon had survived the longest, to his dismay. There was something intimidating about hitting on her. She was from old blood, like himself. Unlike himself, she was a Slytherin. If one combined that with the slight upturn of her nose, well, she looked down right unapproachable. Not that Sirius would ever admit that the five foot, four inch girl kind of scared him.

"So you're moving out after this summer, then?" she asked him curiously, walking around his room curiously. It had changed a lot since she had last been here when they were ten. She was helping him pack his things up in this summer after fifth year, mostly because she and Avery had finally ended their little tryst and she had nothing to do.

"That's the plan," Sirius agreed, emptying out his drawers straight onto the floor. He looked over at her, noticing she was surveying his walls with a sort of condescending interest, and the tips of Sirius' ears colored in embarrassment. Her gaze wasn't focused on the multitude of scantily clad Muggle women, though; she was glancing at the pictures of the Marauders that had been pasted amid Gryffindor banners.

"I bet Remus could be a major freak in bed," she mused aloud. Sirius spluttered slightly. "No, really. He's all booky, but he's got those scars. Seems a little dangerous."

"He'd freak out if you said that to him. I think Remus might be scared of sex," Sirius chuckled. "Planning on propositioning him?"

"Maybe. Avery was total shit. Ugh," Marlene complained, rolling her eyes. She glanced up at the posters and laughed. "Honestly, Sirius. Does this do it for you?" she asked, gesturing to the women in bikinis lying all over motorcycles.

"It's mostly to annoy my parents," Sirius told her. "Do they bother you?" he asked.

"No, if masturbating to those women suits you, then so be it." Marlene was smirking a bit. "Whatever gets you off."

"They don't work more than a couple times." Sirius was grinning a bit. "Mostly when I was younger."

"Pervert."

"At least I don't have pornography taped up there," Sirius offered, beginning to shove his clothes into his trunks haphazardly. What did he care if they got wrinkled?
"Pornography?" Marlene repeated, questioning. "What's that?" she asked, curiously. She wasn't nearly so interested in pissing her parents off as Sirius, and she had never bothered to get involved with Muggle habits or whatnot, assuming this was one of them. To her utter delight, Sirius' face flushed, and she laughed.

"Like-um, when Muggles take pictures or film themselves having sex," Sirius explained. Marlene couldn't help the surprised laugh that came out.

"Oh, wow. I'm not going to ask how you know about this," Marlene smirked. She started cleaning off the bookshelf in his room instead of further interrogating him on muggle sexual deviance.

"Thanks for that, McKinnon." Marlene didn't respond, just kept moving the books and knickknacks from the shelves. She sneezed and coughed when a heavy breath sent dust flying.

"God," she wheezed. "Do you never dust the bloody shelves?" she muttered, coughing again.

"No, I don't." Sirius looked up, watching her for the first time as she stretched up on her toes to reach the things on the top shelf. "Oh, um, no, I've got that," Sirius insisted, standing up and trying to get around her. Marlene didn't move, but she glanced at him over her shoulder, suddenly smirking.

"What're condoms?" she asked, pulling the box off the shelf and looking curiously.

"Muggle birth control," he answered brusquely. "I'll finish the bookshelves, c'mon."

"What dirty secrets are you keeping, Black?" she asked, her fingers finally closing around the few thin magazines that were stacked there and pulling them off the shelf. "Oh!" she giggled. "So this is what you were talking about?" She examined the tawdry cover, ignoring his irritated protests as she plopped down on his bed to flip through curiously.

"Yes, happy now?" Sirius asked. Marlene shrugged, leaning against his headboard and flipping through slowly, curiously.

"I'm pretty sure contorting into some of these positions is impossible," Marlene said, unwilling to admit that she might be a bit flustered. "Avery should have read a couple of these and kept things interesting."

Sirius sat down beside her and craned his neck to see what she dubbed impossible. He shrugged a bit but was acutely aware that he was currently looking at highly inappropriate images with a highly attractive girl.

Marlene's breathing was a little heavier, and she felt a familiar yearning at the apex of her thighs, and she clenched her legs, feeling embarrassed. "So you like it, then?" Sirius asked, a slight tease in his voice as he hid his own mounting arousal.

"Yeah," she admitted, refusing to be embarrassed. "I don't know if I could get off to it, but it certainly makes me want to try," she said, laughing uncomfortably. Sirius was about to bust his zipper, damn it.

"Then try."

"Like I'm going to let you watch. If you're going to be in the same room, I might as well make you do the work. No one's ever brought me before. I always have to do it myself." Avery had been her first, and god, he had been an awful lover.

"You want me to, really?"

"Oh, honestly, Sirius. We're both reasonably attractive teenagers. I'm not even giving you subtle hints. I'm telling you what I want, and you're going to look a gift hippogriff in the mouth?" Marlene asked, smirking. "Unless you're serious about some girl. Then, that's fine."

"Oh-no, no I'm not," Sirius stuttered. He was never caught off guard like this. He was always the one doing the cajoling, and it was so strange to have a girl, Marlene McKinnon at that, asking him to get her off while she perused Muggle pornography.

"I didn't think so," she shrugged. Marlene finally flushed a little. "Unless you don't want to. I guess I didn't think about that very much."

"No, I definitely want to," Sirius assured her. Great, now he was fucking it all up, and she thought he didn't want her. "I just feel...awkward now." Marlene laughed a little and kissed him hard, shutting him up. Sirius sighed in relief. Merlin, this was so much easier than talking.

She hitched a leg around his hips when he moved to hover over her. "I don't want full sex," she muttered against his lips, realizing she might should tell him that. Sirius groaned and nodded, one hand tangling into her blonde hair. After about a minute, Marlene squirmed and searched for his free hand, moving it underneath her skirt. Sirius chuckled against her lips and kissed her one last time before taking ahold of her hips and dragging her towards the edge of the bed. When he had her there, he moved to kneel at the foot and grinned at her, tugging her knickers down. He kissed a slow, heady path up the inside of her thigh, smirking a bit when he heard a moan.

"This alright?" he asked her, his hot breath fanning out over her sensitive skin.

"If you stop, I swear to God I'll kill you," Marlene promised. She groaned again, louder now when he finally moved his mouth over her center. "Shit," she swore, arching up off the bed a little. His tongue moved in full, long strokes, and she had to bite her fist to keep from screaming. The only other room on his level was Regulus', but she didn't want to risk anyone hearing and coming to investigate.

Merlin, he must have done this a lot to get so good at it. Not that she would know the good from the bad in terms of oral sex, this being a first, but she had a feeling it was phenomenal. It felt fantastic. She felt closer to reaching that pinnacle now than she ever had with Avery. She felt two fingers slip inside of her as his tongue continued to tease her clit. She was practically seeing spots now.

"God, Sirius," she moaned against her hand. The sound of his name on her lips had him pressing in harder, and Marlene came hard with a cry of pleasure. She can practically feel Sirius' smirk against her skin as he give her a final kiss and then stands to his full height. Marlene closed her eyes, and she panted, trying to calm her racing heart. Marlene didn't have the coherency to tug her knickers back into place nor straighten her skirt.

"Remind me to show you more Muggle things," Sirius chuckled. Marlene's face burned red and she laughed shakily.

"Let's not tell anyone that a quick flip through explicit images made me this willing, alright?" she laughed again, finally opening her eyes and pushing up onto her elbows to look at him. "That was a first for me," she told him, matter-of-factly.

"Oh, come on. You've been shagging Avery for months now, surely he's done that," Sirius insisted, and Marlene shook her head.

"Nah. All the better, though. He would have butchered the experience, I'm sure. Avery was too selfish to give and too shy to just take," Marlene explained. "Frustrating beyond all measure." She finally fixed her knickers and skirt and then glanced back to Sirius. "Do you want-" she cut off, not sure what to say.

"Not today, Marlene," he smiled slightly, sitting down next to her on the bed. He wasn't in a hurry for her to reciprocate, and the urgency of the moment had passed for now. His throbbing arousal would ebb, or he would take care of the issue himself. When she sat up and leaned against his headboard again, he moved to sit next to her and draped an arm over her shoulders.

Sirius pulled a box out of his pocket and opened it, revealing two small rows of little white cylinders, and Marlene watched curiously as he pulled one out, then offered one to her.

"Um, what is it?" she asked him, taking one and frowning as she examined it. Sirius chuckled a little.

"Another thing that annoys my parents. Called a cigarette. You smoke it."

"Like a pipe?" she asked curiously.

"Same idea, I guess," he nodded, pulling out a small, brightly colored shape and fiddling with it until a small flame appeared, and he lit the end of his, making it glow a soft red. Marlene held hers gingerly while he lit it. "Honestly, don't look so scared. What kind of Slytherin are you? Aren't you supposed to like delinquency?" Marlene gave him an irritated glance but watched as he slowly demonstrated.

After delaying as long as possible, Marlene mimicked his actions and came up spluttering, coughing violently while Sirius stifled a laugh and watched as the smoke dissipated in the direction of the open window. He pulled out an ashtray and sat it on his knee. When Marlene was finally breathing properly, she tried again to a slightly less violent reaction.

"So, pick this up from the same Muggle women you use...condoms around?" she asked, voice a little hoarse still.

"Yeah," Sirius nodded. After another few drags, Marlene gave up and pressed the cigarette into the ashtray, feeling a little queasy.

"I don't know how you enjoy that," Marlene told him, rolling her eyes. She glanced at her watch. "I should probably go." Sirius didn't move his arm from around her for a long few seconds, and before he did, he turned and pressed his lips to hers solidly.

"Bye," Marlene managed after the unexpected gesture, heart thrumming about somewhere in the vicinity of her throat.

"Bye," Sirius echoed, grinning at her and then watching as she apparated back to her own home.