<human>: Can you succinctly summarize the text in 1-3 sentences?

I don't understand. F21, boyfriend M19, been together 9+ months 

And let me preface, he says that he trusts me 100%. And when it comes down to what's important, I believe that he does. 

I don't know how to fix it. And it pisses me the fuck off. told him about a dream that I had this morning about how I was at some party and some guy was holding me and I was trying to get away and felt better after boyfriend showed up and took me away, and he went "that means there are other men. You feel like you're being held back by what's 'appropriate' in our relationship." And it makes me so. mad. Every time. because he jokes about this about how I'm talking to other people and about how I want other people and all this shit. When I don't. And I tell him not to joke about stuff like this with me, and we have a nice civil conversation about how it upsets me, and then he says sorry and then it happens again a few weeks/months later. And then I blew up at him once, going "well fuck I might as well see other people anyways because you seem to think that I do so why should I bother to turn people down if you're just going to act like I'm cheating on you anyways." Granted, not the best reaction, but I was really upset. 

I don't know how to deal with this. And he just says "okay I just wont joke with you anymore." But he just doesn't seem to understand that there are just **certain things** that I don't think should be joked about. And he just plays it off like "oh it's just a joke based in absurdity." and then that "you're the worst fit for my kind of humor." I get that he's joking. But I can't NOT feel bad about those types of jokes. 

I don't want to take away his humor and a part of who he is, but these jokes just really rub me the wrong way, and we can't seem to settle on a middle ground.
<bot>: Boyfriend often makes jokes about subjects that are really sensitive to me, and we cant seem to settle on a happy medium.