Weird relationships

So my bf and I have been dating for almost a year and a half now. In the beginning of our relationship and before that I had a CRAZY sex drive, but I have never orgasmed in my life. However, I stopped wanting him around 4 months ago. Before that I could have some days when I still wanted him. But now I don’t know what to do. I got ROCD, I can’t decide if I love him or it’s just comfortable that he takes care of me. Sex hurts and I can’t go without a vibrator. He knows I can’t orgasm and I barely want him, but he can’t do much, he tries really hard and loves me a lot. The thing is, I consider a possibility of me wanting other guys, but I would never cheat, I just fantasize. I’m about to go an exchange for a semester next spring, I’m scared. Any advice?:(