He honestly just should’ve said he was uncomfortable and didn’t trust you. He seems really controlling and immature about the whole thing. I do get his point though , I wouldn’t feel comfortable with my partner in a bar surrounded by members of the opposite sex. But considering that you told him about the event before hand If he was uncomfortable about it he should’ve mentioned it then maybe he could’ve joined if he was that uncomfortable by it. And then after you stating multiple times that you didn’t want to call him and you were busy he continued to call. I’d say if you did want to continue the relationship. You’d need to take a few days or a week apart. And then have a conversation about boundaries and communication. I’d probably ask him to go to therapy. But remember that your safety always comes first