"That's a dangerous promise," Kirley said, drawing back a little. "I could tie you up, take you to the edge and back over and over, and not let you come even if you begged for it." Again, it was tempting, but not actually what Kirley was after. He liked to watch his partners fall apart from pleasure more than he liked seeing their desperate please when he denied it. In the end, pleasure was always more fun. "Lucky for you, I want to see you come over and over again."
There was something behind Sirius' eyes, behind the drunken desire to get laid, but Kirley wasn't a therapist, or a babysitter, and Sirius was a grown man. Kirley also wasn't a saint, and ignoring the eagerness in Sirius' kisses wasn't something he was in the mood to do. It was just sex between consenting adults, and sex was good.
He ran his hands down Sirius' sides, firmly enough not to tickle, then up over his stomach and chest. He paused to thumb his nipples, remembering that the man was particularly sensitive there, before replacing his fingers with teeth. His hands roamed lower and urged Sirius' legs up around his hips. He pressed his fingers firmly against the man's hole, not pressing in just yet. He needed lube, so murmured the right spell, before slipping two fingers inside him. He kept working at Sirius' nipples with his teeth, waiting for the other man to go completely wild beneath him.