Boyfriend and porn.......

So I know my boyfriend watches porn every single night. Multiple times. We don't live together but we've talked about it. He was single for ~eight years~ before we met (and hadn't had sex the entire time) and I know that's enough to fuel a porn addiction. Personally, I hate porn and the entire concept of it. My guys friends say I "just don't understand" because I'm a woman. I don't like the idea of my partner going to other women for pleasure, I know its not physical but HES STILL JACKING OFF TO OTHER WOMEN and I see that as unfaithful and disrespectful. I would like to ask him to give it up....but what if he refuses? What if he says he'll quit but doesn't? What if he is actually addicted? I want to be the only woman he goes to. I can't change what he has done with his life in the past but I don't want to see this continue in the future. We've talked about marriage. I don't want my husband jerkin' it to someone else. I don't want my kids stumbling accross daddy's porn stach. Any advice? :/