My girl's best friend happens to be a gay dude and they've known each other for 7 years plus. He's a cool guy but sometimes his personality is unbearably annoying. However, I have never said a word to my her. My girlfriend and him are really close, they occasionally end up crashing at each other's houses. This never bothered me because I knew of the guy before I even dated her, and mainly because well he's flamboyant. Also I'm not the insecure type. Well the guy ends up moving and him and my girlfriend stayed close friends. I never had an issue with this at all whatsoever. Anyways while he was away, out of the blue when my girlfriend was talking to me about him, she told me the night she told me to pick her up from his house one night months ago was because he recently got dumped by his boyfriend and was begging my girlfriend to have sex with him. Now when the guy ended up moving back, there was some issues. She accused me of not trusting her but that was not the case.I never worried that she was going to have sex with him, but I felt extremely disrespected. I didn't consider the guy a threat but I told my girlfriend I don't care to hang out with the both of them anymore. When I did see him, I would always be polite. My girlfriend agreed to no longer crash at each other's places, and if they did, he would take the couch. Well anyways, she tells me they're going to go on a road trip for two days to Arizona (she asked me first to go but I couldn't due to work). When I hear this, the first thing I asked was what are the sleeping arrangements, and she said they are going to get a hotel room. I tell her that I'm not okay with it, due to the principle of the guy trying to have sex with her to which she responds "you don't understand, that's just the way he is" and then keeps on saying she's not going to stop being friends with him. I tell her that I never asked her to stop being friends, and all I'm asking is for her to respect my wishes. She then gives me an ultimatum of approving the trip or breaking up with her so I broke up with her. Was I being unreasonable?