[He's pretty great that's true. And all wariness Bucky can detect are chalked up to the weirdness of meeting someone from the past -- he doesn't exactly have much reason to suspect any other motives, here.]
You too. [... and, because he's going to have trouble explaining how he knows things about the future if he doesn't start with this, he clears his throat.]
You know... you're some months late. Steve-- he was here for a while, too. He mentioned you - so turns out I'm not just lucky enough to get to see my best pal again, I'm also gettin' the chance to meet one o' those who's watching his dumb ass in the future. [A wry smile.] Guess this's gotta be weird for you.