"What are best friends for," Steve murmurs, which doesn't really explain anything, and yet is the best explanation he has.

He certainly can't deny that he needs to get back, but the thing is - "Sure, but what about you? If you can get me home... you can come with me, right?" He frowns. Isn't that sort of the point?

Two years, Bucky had said. "Did you - want to be out here? Doing... whatever you're doing?"

There's something in his eyes, his stance, that immediately says, If you do, then I want to be out here, too.