Boyfriends and Ponography

My boyfriend and I have been dating for five years. We've been pretty serious for a while. No matter how cliche it sounds, he is my best friend . And I know we both have the same intention of spending the rest of our lives together. But about a year ago, he asked me to look something up on his phone. His history was pulled up when I opened the Internet and there was porn websites in there . Just one or two, but I was so hurt. I spoke to him about it and we agreed to not fight over it. He never told me he'd stop, and I never asked him to. I just told him it hurt my feelings. The next time I caught him looking at it, (6 mo this ago) we were on vacation and I just picked up his phone.. ( we have the kind of relationship. It's almost more of a marriage) but I found d those websites again, and we fought really bad and I told him I needed him to stop. I don't think that was to much a request, he wouldn't want me looking at naked guys.. Well now recently I saw he s been looking at it pretty recently 8 asked him how often and he said just anytime he gets an "urge".. I asked him if he thought he was "addicted" and he said I might look at it 3-4 times a month. Anyway, I'm broken about the porn thing. I know he's ashamed of it, mainly because he told me. We are both religious, and I know he is struggling, but I just HATE IT. It disgust me.. He's promised to stop, but I just don't trust him this time, and that breaks me heart. I want to trust him so badly. Does anyone else deal with their boyfriend wat hing porn? Should I ask him to stop or just let him be?