"I have your permission." Damian holds your hand, looking into your eyes. "You must come with me." What he wants to say is; he sees you as his parental figure and can't go and live with his father unless you come along with him as well. Not that he'd admit that. It might sound silly to see someone not by blood as a parent, but Damian doesn't care. You raised him, trained him, did everything Talia didn't do completely. You're not just his guardian, but his family, he looks up to you, very much.