"I'm as fine as I can be," Sirius said, semi-truthfully. Peter wouldn't believe that be was completely okay, and even in the depths of denial Sirius could admit that he was at least a little upset. "But we talked, and I don't think there's anything else to talk about. He's happy, and I'm happy he's happy, and that's about all there is to that. So we might as well keep talking about the new project. Or we could talk about you. How are you doing?"
He turned his focus to Peter. Was this the natural moment, or would it seem like deflecting instead of genuine interest and concern? Sirius didn't usually think this much about the things he said, and he wasn't very good at it. He worked best off of instinct, but he knew he had to start making a conscious effort not to do that anymore, at least with Remus. Peter would probably appreciate it too, if he was a little less Sirius all the time.
"How are you holding up? For real, not a deflection, I genuinely want to know."