How old are you? You'll learn one day that men tend to think differently than most women. I watch porn but probably not to the extent my boyfriend does and I'm OK with that. They masturbate more than most women and most guys who grew up with the internet grow up needing the visual stimulus that porn provides. It's easy and it makes it a faster process. He's not thinking about leaving you for them and he still very much so loves you, he just wants to watch people have sex. I know you feel betrayed, and there's the lying/trust aspect of the situation that needs to be dealt with, but in the future, you can't ask such ridiculous requests. You can get mad at him for lying but you gotta make him feel like he can be open with you in all things, including what you don't neccesarily approve of. You should look into James Deen's non-BDSM porn. He'll make you re-think your porn tastes!