[Instantly regretful, Bruce reaches out for his arm again, this time not in a grab but just to stop him with the pressure of his hand if he will. He's not apologetic-- he'd meant every word he said-- but he's taking out his own frustration on him and he knows it.]

No, that's not what I... [An exhale, recentering, taking his hand back. Tony will either listen to him or he won't; he has the right to do either.] Four months, [he says more quietly.] I know it's a hard adjustment. They're not little problems.

[He hadn't meant to minimize the internal struggle that being here requires. Maybe Tony doesn't want to hear that Bruce considers them the same person; maybe what he wants to hear is that he doesn't, and he still wants this one around. That's just as true.]

I am glad that you're here. You specifically. If you need my help, too, then you have it. With anything. [This kind of open offer is extremely rare from Bruce, but he means it, and the honesty is scrawled across his face.]