Sean bows his head in agreement, not letting his smile fade entirely. He's all too acutely reminded of just how bad things were for her the first time this happened, after they got back from Seattle, and he feels a pang of guilt when he recalls what he almost did then. He's not going to fall into the same trap, not going to leave himself open to that the way she did back when neither of them knew better. "I know," he replies quietly, laying his hand over hers again. "Me, too. One day, though."