Lesbian porn

So the other day me and my bf were just talking about him hiding porn and I told him I know he does it an I mentioned to him that I do masturbate too and when I do I watch lesbian porn, and he freaked out it turned into such a big argument way more then it should have been. So anyway now he thinks I'm a lesbian, which I'm not. First of all idk why he got mad that I do it when I know he does and not only that we've gone to strip clubs and he knows I like girls but when I told him I watch lesbian porn idk what the problem was only. He totally overreacted. What do you girls think?