I don't understand why it's a big deal that he looks at porn. Studies show that masturbating and watching porn (not excessively of course) is actually healthy for a relationship!

Not to be harsh but it sounds like the issues are with you and your insecurity. Why not try and turn this into a fun, relationship experience? I told my bf that it kind of bothered me him watching other girls in videos....so he asked for pics of me. This way it's healthy for him and having a fantasy life but doesn't hurt my feelings. And I know he still looks at other girls but I'm definitely guilty of thinking about other guys.

I really think this is a mole hill being made into a mountain and a simple open conversation should settle it. It's totally normal for a guy to want to look at naked women and I don't want him to feel guilty for a natural thing.