[Bucky just shrugs one shoulder helplessly when she points that out. He did sleep in a bus station and he does definitely look like it, there's really no denying it.]

Yeah, well, with everything going on... [SHIELD is a mess if half of what he's heard is true. He doesn't exactly have his main contact there anymore, though, now that he's pretty much trying to avoid Natasha because it hurts so much.] I- Yeah, I guess. You've got a world security organization, I've suddenly got a lot more free time...

[What goes unsaid is that he doesn't really have anywhere else to go.]