"No, we really don't have to talk, because there's nothing to talk, and you forget that there are about a few hundred rooms that I can use, so instead I'm just going to go and I'll get my things in the morning." That was much better.
In fact that gave him another idea, maybe they should set up Grimmauld Place again for the three of them and while there, he could find some clothes. How bad could they fit? He was never one to care about fit anyway.
"Right, enjoy the room," he said, going to the door.