Bucky answered that needy whine with a nip to Billy's throat, and followed that with a line of kisses down to his shoulder. He tried to slow down, really wanted to savor the moment, but he'd also been holding his own feelings inside for so long that he didn't think he could hold back any more.

"Promise I'll take care of you," he murmured, slicing the bottom half of Billy's outfit open. He moved slowly, partly to tease but mostly because he had a very sharp knife next to a very sensitive body part, cutting a line parallel to Billy's cock and encouraging it to spring free of the fabric. The sight alone drove Bucky's want higher.

"Billy..." he breathed. "C'mon, c'mere, here, right here—" Here being the closest wall, the one right outside the little bathroom where Billy could lean and Bucky could drop to his knees, licking his lips before he even got his mouth on his partner.