[Starts at the hug, but returns it, face in his shoulder so Bucky doesn't have to see the truth in his eyes... The things he just can't tell him now. How he's still alive. How Hydra found him and tortured him and made him into their wepon and Steve wasn't there. And when he did-]
There's a lot I gotta be sorry about, Buck. [Closes his eyes and sighs.] ...I'm not sorry I get to have my best pal back.