<human>: Can you condense the text into three sentences or less?

My boyfriend and I have been together for a little over a year. He's always watched porn and I never cared. I used to love watching it with him, in fact. Over time, its become more frequent. He feels he has to masturbate to porn at least once a day to "relieve stress". Okay, fine... Problem is... He's now limiting time with me. Sex was daily, now it's every three days, at least, and he rarely ever cums. It lasts forever and just ends with him saying "this isn't working". 

Now, I get that guys masturbate, but its coming to the point where I can't even look at an NSFW picture without feeling bummed out or let down. When he shares these pictures with me, I feel hurt again. I've brought it up to him before and he said he would stop, but he keeps finding reasons to keep watching porn and masturbating. He's addicted and I have no idea how to confront this without being a complete bitch about it. Its gotten to where I have gone from being completely jealous-free, to worrying about every girl he makes a comment about. Its killing my self-esteem and pur sex life. While he masturbates, I'm left untouched. I just really don't know what to do because everything else in the relationship is amazing.
<bot>: Boyfriend watches porn, masturbates constantly, sex is now hurting from it and I've turned into a jealous monster.