Doing alright isn't exactly how he'd put it, but he shrugs as if he's doing as okay as anyone on a weird alien world could be doing. This has gone way beyond PTSD and soldiers returning home, and he doesn't have the right to bring his issues into it. Steve needs him, he's been changed from being goddamn human, if he's followed this correctly, and that's way bigger than anything.

"I think I missed some stuff while I was out. Steve, what the hell is going on? Are you gonna be okay? Are you gonna-- you can come back with us, can't you?"

Because otherwise he's going to have to find a way to stay here too, and he has a feeling that he might be slightly less welcome than Steve.