He nods, turning the water on. He gets it hot as he could stand, then reaches down to plug the tub - it's not something he thinks about until after he does it. Then he seems to realize what he did and he looks up at Natasha. He sits obediently on the toilet, looking up at her trustingly. The door is closed, it's just her and him in this little bathroom. He offers up his left arm, holding it awkwardly up so she can work on the damaged section.