Sirius chuckled and nodded. "I suppose we can wait, since he's been so very nice." Sirius didn't mention that Dolan would have done it even if he wasn't being nice, that was neither here nor there.
"I can be serious from time to time." he told Jame shrugging. "No I don't want to jump into this either, I just want you to know and then I guess we decide where we go from here." He shrugged when James asked him for the reason.
"I want a family with you, not just you and me, and not Regulus and Remus." They were family regardless but he wanted more than that. "I want something that is just ours. And I want to be a dad, And I want you to be a dad, and I want to teach our kids to be awesome the way we are." There were other reasons too of course, but those were the reasons that came to mind first, nothing about Regulus or family duty, just reasons for the two of them.