This was horrible. It was just stepping in halfway through a fight with no knowledge at all, except a sinking feeling that he was definitely the one in the wrong. Could you be sorry for something you hadn't done yet? He sure as hell felt it, the guilt weighing on him as if it had just happened - whatever it was.
"I've hurt you-" he said, which wasn't a question at all. "What have I done?" he asked softly, and then recoiled slightly, not sure that he really wanted t know. But if he knew, then - maybe he could change it, if such a thing were possible.