[ He turns around so he can face her, pulling the towel over himself in case he lost control of his glamour again. Maybe he should have told her earlier, but he's always put it off because there wasn't a need to. And now... ]

I was made like this. When I became human, they were already there. So I just covered them up with magic.

[ He doesn't think he needs to say what the they are. ]

So they're not... well. They're not new. It's nothing to worry about. [ Since they were with him from the beginning. ]