Mind, living quietly in a flat with Sirius would be living not all that quietly at all -- but it would be quite a lot different than becoming the poster boy for all things Not Bad Werewolf. Sirius didn't really want that sort of attention on Remus either, if only because he knew Remus wouldn't like it for a second.
And here, maybe, he wouldn't have to make a big thing of it. Maybe it'd just be fine and they'd find a decent fix or stopgap or whatever the bloody word was for that one night a month. Maybe everyone would be decent about it, and there'd only be a few questions and absolutely no blazing pitchforks or -- whatever it was that muggles did when they were scared of something. It wouldn't be worse than what wizards would do, that Sirius was positive about.
Didn't matter though, not right now. Not with Remus' hand tangled up in his. That was what mattered. And maybe the prolonged amount of eye contact that was overly fond and spoke very loudly of The Thing going on between them.
"Good," he said, and it didn't even come off as lofty. Just quietly pleased. "Now you should probably just pet my hair some more, huh?"