"Oh, most definitely me," Leo said. "You seem far too proper for any trouble." That was a complete and utter lie, but Black definitely seemed like the type to not get caught for any trouble he found. "Hmm, you'll have to prove it to me, I think."
Leo tracked the movement with interest; Black really was attractive and it had been a long and unwanted period of celibacy recently. "I'll remember that for next time. Be as specific as possible, to avoid the Cruciatus curse. See, I can play things smart sometimes." He really shouldn't be enjoying a conversation where the Unforgiveables were being thrown around so casually, but he'd never been good at not doing things he shouldn't.
"Hmm, you know what? I think I'll keep them to myself for now. Make you work for them. Got to keep some secrets to keep our relationship from being boring." Leo grinned playfully, eyes flashing with amusement. "I think I could make time for a little suffering. Owl me when you've worked it out, and I'll see if my oh so crowded social calendar is empty." Since he didn't have a social calendar, he could almost guarantee he'd be free. "I guess we'll see how boring your life is."