[Bucky's holding the bag, and now that Steve has confirmation that the other arm is a prosthetic it isn't like that one's an option to take really, so he just reaches out instead to touch the back of Bucky's hand. Light, barely there, easy to pull away from.

His eyes and voice are so earnest.]

I'm not made of glass. I'm harder to hurt than you think. If you sincerely don't want to, I understand, I promise. But even if it doesn't work out, you'll still have my friendship.