Is AUTHOR wrong in the post ? POST : I honestly think Im crazy and he made it seem like im psycho. 
Last few days have been a total mess because of it. So here is the story. 

My boyfriend (22) and I (21) started dating when we were 18 and we were serious from the beginning. Those years are young to be engaged or anything else so we just decided to make it a serious relationship. 5 months ago we moved away to a different state and we both had trouble meeting friends here. I am socially awkward person and its so hard for me to fit in with other girls, I always got easier friendships with guys. Since we are in a serious relationship im not allowed to meet guys here because "all guys want sex" (his words).. 
On the other hand he met few girls but for his excuse "theyre ugly and he would never do anything with them" but yeah he met them even though Im not allowed to meet guys! Okay.

So, he introduced me to this girl (27) that is his new bestfriend about two months ago I guess and she gave me weird vibe from the beginning but okay, im just a *jealous girlfriend* so I cant judge! She mentioned some city that we all should visit and its 4 hours drive. I agreed in the beginning thinking it will never come to realization because we all have filled schedules. 

Fast forward to few days ago, they start to plan that trip to happen next weekend! First I told them no way I can because I work and even if I could get a replacement I dont have any money saved up because of hilarous bills. He told me he really wants to visit that city and its always been his dream so he's going. 
Am I in the wrong for being mad at him about it? Its just two of them going but if not just two of them then she is bringing her other female friends.. I dont know which one is worse.

I should add he cheated on every girl he dated before. 