The pain is sharp but feels liberating, and mingles so thoroughly with pleasure that for the first tense moments Sirius can't tell one from the other. It's been so long that he'd forgotten what it felt like, the ecstasy of the violation, the weight of someone else inside him. Caught on that first wave, his shoulders arch back, press hard into the mattress as his spine bows up, meeting Granby's body as he hovers above.

"Fuck me," he replies against the other man's lips, one hand already caught behind a knee, angling his hips. "Fuck me as hard as you can."