Yes, CP is wrong. It's wrong to be made whether consensual or not. It's also wrong to look at, and be aroused by, but you can't help it. When you're born/hit puberty you don't get to decided what turns you on, and what does not. You don't choose to be gay, straight, or to like CP. Although I think it's a bad thing that he's looking at the stuff because he's not helping his problem at all.