"Do you need more prep?" Remus started to ask, but the words died in his throat with a moan as Sirius slowly slid straight onto Remus’s cock. Sirius probably could have used a bit more prep, but fuck, he wanted Remus now, right now. He wanted to feel every inch of him pushing and stretching him open. Remus’s head tipped back as Sirius sunk lower, and the pleasure-pain was just this side of too much, too much, too much as he slid deeper and deeper inside until their hips were flush and Remus was sheathed in him to the hilt.