I talked with my fiance and im still upset.?

So I calmy tried to express my feelings about this masturbation/porn addiction and he just got angry and puhed me farther away.he says he is a grown man and he should be allowed to do that whenever he wants. And to those who told me that I need to help him out or watch the porn and try new things....I have I have tried it all ad it works fr themoment but he goes right back. I just don't know hat to do.