"Truly?" Derek searched Isaac's expression. He heard no skip in the boy's heartbeat, no insincerity, but that didn't mean that Isaac was telling the whole truth. "There are things I have been reluctant to do with you, because I don't want you to think of me like you think of him. Things that you've done with others. I won't think less of you if you still need that, if you need to do things with other people." He swallowed, the words obviously a struggle. "But I could try. For you. To be what you need."