He's said it or, at least, enough of it. Sirius could have talked to Gamma for a much longer time, to truly explain everything. But it wasn't about explaining everything, as much as he had tried to do so. It was about explaining enough. Of that, Sirius felt satisfied. There was a bit of a weight off of his shoulders. It was official, much more so than a conversation over the journals ever could be. That didn't make everything magically better. But it helped, it helped a great deal. It helped far more than knowing he was going to do it. The doing of it mattered.
That understood, Sirius had not thought about how Gamma would respond or, indeed, many ideas on what he might say, either. But as much as the expression of feeling was one-sided to a large degree, there were two participants in the conversation. As such, the question - the questions - surprised him a little, as easily as they both could have been predicted. "I certainly do not want a new block," Sirius replied to the more specific, and thus easier, question first, "I've never wanted special treatment from you. And I don't want it, any more than you'd give to another of your taken." His words were slow, thoughts just a few moments ahead of speaking. "While we are moving on from this, it has happened. Don't ignore it, like I never pursued you."
He was quiet, thinking a few moments longer, reflecting back to the books he had read, books Gamma had written. "After that, I suppose, if there's anything you know about professionally to help me, I'd appreciate that," Sirius said, "Since you've written on similar topics." Sirius knew this situation, while peculiar in some of its specifics, was not a special snowflake.