My classmates started watching porn at the tender age of 11~12, I only started when I was 15. As healthy teens, it is a part of growing up to be exposed to these things. But how you let effect it your life is a different thing. My classmate started fooling around with each other and some kids I know too started making their own 'movies' and spread them around not only amongst the school but to other schools as well. As for me, I watch pron just to get a sense of relief. Nothing more. My family never talked to me about sex or anything. I had to find out by myself. I'm glad I have better senses that the other kids. I didn't let it get to me. I too had reached a point where I thought I was 'addicted' to it because I would watch it at every possible time I can. I would sometimes feel guilty after it, especially watching a really harsh one. ( I actually swore on my right kidney that I won't watch any for a longer while, as a form of self-control I listen to myself better) Watching pron doesn't make someone a perv or a bad guy. It's how they deal with it that does. The fact that your son told you directly shows that you can trust him. He must be really confused when he thought he was addicted to it and came to you for help. It's a good move to block it, you know to help him a bit. I can't really say that it's absolutely safe to unblock it when he's older, because then he's a big boy so he might be bolder and braver with his actions. I can't really make a judgement because I don't know him, but as far as you've told us, he sounds trustworthy and it seems to me that he knows what he's doing and can make the right decisions. So you don't have to worry much