I feel like I'm the other girl yet their isn't

He didn't invite me to a DATE function. My long term bf didn't invite me to a date party. Every guy brings a date, so it's not like he just wanted to be with his friends. I have asked and still not been invited and expressed how I wanted to go. I know he's going to give me an excuse like I didn't think to invite you (I said I wanted to go), I didn't think you would want to go ( I said I wanted to) or that he didn't want to pay(I can pay for myself if he asked, even tho it's only $30 for a date)🙄. Does this clearly show he doesn't want to be with me/take me out? I feel like an idiot for thinking I would go, but there's no reason I shouldn't go right? If he doesn't want to take me out or is embarassed by me then he should have ended it by now right? I'm already so self conscious and him not inviting me without any reason is killing me! Would you break up with him? What about when he gets invited to weddings, am I not invited to be his plus one? (FYI since his friend said there's only one ticket bought so I know he's not cheating) I can only think that his friends don't like me (their gfs hate me-never met them so no idea why) and that's why I didn't get invited. But if that's the case he should be mature enough to stand up for me and our relationship and not go.