[ Another light huff before he sobers again, glancing over at Sam to study his features for a second before looking away again, frown returning. ]

Sounds like you all got put in a tough spot. [ Steve holds some responsibility whether or not he's technically the one that led them into whatever mess they'd escaped from, but his expression reads more pensive than guilty. Blaming himself right off the bat for something that the rest of them went through isn't going to make anyone more willing to talk to him. His gaze drops to the bottle between his hands, thumbnail picking at the label. ]

From the way you were talking to Buck back at that hole we were living in - I kinda figured you'd been with him longer. [ From the way Sam handled the situation it seemed like he knew what he was doing, knew what to say to get Bucky to calm down. Maybe some of that had to do with the broodmate deal, but more likely Steve thinks that what he mistook for Sam's knowledge of Bucky's problems through a longer history with his friend was more a natural strength of Sam's, or earned through some other experience. ]