"Are you sure you want to do this?" Remus asked as Sirius unbuttoned the first button of his shirt.
"Yes," Sirius murmured before kissing his throat.
"Are you sure you want to do this with me?"
Remus stilled Sirius' hands which were undoing the second button.
Sirius pressed another kiss to Remus' skin, near his ear lobe.
"I'm not… I'm not Marcus Quartermane," Remus said, referring to the starred Quidditch player Sirius had a poster of over his bed.
Sirius pulled back and looked at him, a look of confusion briefly crossing his face before he chuckled.
"What are you laughing at?" Remus asked, dropping his hands to his sides. Sirius ran his thumb over Remus' jaw before answering.
"I just think it's rather ironic that none of the girls I've done this with ever questioned if I wanted them and the funny part is that I never really wanted them. Not like I want you."
Remus flushed and averted his gaze downwards.
"Moony, look at me," Sirius said softly, one hand tilting Remus' chin up. Remus glanced up into Sirius' eyes.
"Remus, listen to me. I think you are far sexier than Marcus Quartermane –" a kiss to Remus' bottom lip –"and ten times more handsome –" another kiss, to the edge of his mouth – "and seventeen times more shaggable."
"Seventeen?" Remus echoed.
"Seventeen," Sirius repeated with a nod. "I've done my maths. Arithmancy class is good for something, you know."
Remus smiled and kissed Sirius on his lips briefly.
"You've thought about this," he said quietly. "Thought about us, doing this."
"Are you kidding?" Sirius said incredulously. "It's practically all I think about!" He coughed a little before nuzzling into Remus' neck in embarrassment. He could almost feel Remus grinning.
"Well, not all I think about," Sirius amended. "But yes, I have. A lot."
"I don't want to disappoint," Remus said lightly but Sirius could hear the undertone of nervousness.
"Me neither," he admitted. "But, here's the thing Moony," he said, pulling away to look Remus in the eye. "If we mess it up the first time, there will always be a second time and a third and a fourth and a fifth and a sixth and –" He was cut off by Remus kissing him earnestly on the lips, his tongue slipping into Sirius' open mouth.
"And a seventh," Remus finished, grinning.
"And a seventh," Sirius repeated. And really, when you were bound to shag dozens – nay hundreds – more times, what did one time really matter?