"Fuck," Sirius breathes, heat rushing straight down his spine at even so simple an offer. He wonders if Kieren can feel that too, that reaction, or if the way Sirius's dick jerks in his trousers is enough.

A bit light-headed, he sways forward, grateful for Kieren stood before him so he doesn't fall to his knees himself. He leans in close enough to press forehead to forehead and lets out a shaky breath with a nod. "I'd-- Well, to say I'd like that feels a bit of an understatement. D'you want to? Merlin, what I wouldn't give to make you come, but if this the closest we'll get, I'll take it."