[He'd been moving toward the window, one foot moving to settle on the windowsill before Billy started up. It's enough to give him pause, looking back with a fondness that might not translate to a mask — but certainly translates in his voice.]

... Heh. Thanks, man. But I'm sure you got enough going on in your universe — no need to worry about a totally other one. [He shrugs, trying to shake off the ache that Billy clearly knows is there. Damn.] That's, uh — that's really cool of you, though. I'll remember that, I mean. Seriously.