I agree with myrabeth and Mindy86. Women tend to get tweaked about man watching porn and turn it around into something being wrong with them or the relationship. That's crazy!
Please remember ... it's just watching and fantasizing. Lots of studies say that women have rape fantasies. Do they really want to be raped? No!!! But, the mind offers us rich, wonderful and creative thoughts that are nothing more than thoughts.
Having an open discussion with your partner, as myrabeth suggests, is a great idea. You probably want to ask him why he enjoys watching 12-year-old girl porn or gay porn. He may not even be fully aware why, but it's good to get it out there. And there's nothing wrong in you telling him, in a loving nonjudgmental way, how you feel about his porn watching.
Most men watch porn. Period. Many women do, too. It doesn't mean there's anything wrong with the relationship, and it may even enhance it because it allows him to explore those sorts of things in his mind without having to make up uncomfortable by, let's say, playing an adolescent girl. If he's an addict, that's a different story, but it would be the same if he were addicted to booze, pot, etc.
