Gods bless that awkward 19 year old enthusiasm. Sirius does so adore it, for so many reasons. He leans into the touch and the kiss, feeling a shiver down his spine at the little high noises Remus is making. Too good. He responds with a low almost-growl, kissing down Remus' jaw so he can graze teeth over his neck.

"Tell me about it..."

How did he never do this sooner why did it take this ridiculous oversexed world to make Sirius realize how good this could be. He's a bloody fucking idiot.