[ Shiro's not the only one who expected more accusation than that. Sam's not a stranger to fighting with people - there's no way he could be, especially not here with Katie and Bucky and Parker in his brood - and he's used to people getting defensive at him. He's used to having to be the one to weigh if it's worth reacting and getting ramped up of if he needs to be the one to try to calm them both down. ]

Thank you. For the apology. I, uh. I'm not really used to getting that when I'm a little pissed off, you know?

[ He isn't used to people treating him like his feelings are things that are valid, he means, not recently anyway. He doesn't exactly mean for that to come across, but it does anyway.

And when Shiro looks up at him, lets the implication that Sam is someone who matters to him sit there - Sam can't help but reach out, moving to try to rest his hand on Shiro's cheek. ]

But I need you to know - I'm not mad at you for messing up. You're human, Shiro, you're allowed to make mistakes.