I had a fight with my friends and I honestly am not sure if I'm in the wrong. So for context I'm a guy who is in a friend group of all females. We met in freshmen year of college in NoCal (North California) in 2013 and have been pretty close for the most part. I got into a toxic relationship that pulled me away from this group but we were able to slowly rekindle a few years later: I'll explain later why that's important to the story. So one of the girls in the friend group, who I'll refer to now on by M, graduated early and was living in SoCal. I have driven down to LA on several occasions to visit M and I had brought another friend in this group, A, down with me before once. I never charge A for the ride, just to split the gas and the driving time. A is a very strong-willed kind of girl. She's normally a nice and caring person who doesn't put up with bs or drama. Really down-to-earth. A and I have been pretty close but in my eyes things were never romantic. My gf and I were very on and off and I kind of liked A, but A always mentioned that her taste in guys is different than me and has told me on multiple occasions I'm not her type even though I've never hit on her. M as well as other friends always would push me to ask her out but it never felt appropriate. No one in the group like my previous relationship and would try to ship me and A even tho both of us made it clear we're not into each other that way. The reason I'm saying this because I think it has to do with A's behavior towards me. A used to be very nice to me and  always a little condescending but I invited that with my crass and immature behavior. However in the last few years of our relationship her attitude towards me became extremely hostile. While others in the group would groan/chuckle at my jokes, A would scoff very curtly and coldly. I would always try to brush off this behavior as a joke but it got to the point that A would never smile or laugh at anything I say and would go out of her way to let me know she disproves of my behavior. When others exhibited the same behavior as me A wouldn't mind it at all, it only seemed directed towards me. It was so bad that I would sheepishly confront A asking " A, did I do something to upset you", "if I did something wrong, I'm sorry" but these comments were usually ignored with A rolling her eyes at me. I didn't want to make much of it so I always quickly dropped the subject. A was planning to move far away so M suggested that we visit her before A leaves and we all agreed. I drove 3 hours through traffic to get to A's home and pick her up and the drive down to LA was mostly uneventful. Its usually around other people that A's attitude towards me greatly degenerates. She constantly shot down every comment, joke, or suggestion I make while talking as a group. M would see this as a joke and join her but M would always smile and laugh just to let me know that this is all in good fun. Which is fine, I joke like that as well. Its just that with A it seemed like it wasn't a joke and that she just hated me. I confronted A again on this behavior in a sheepish manner since I don't like making drama and again she blew me off. Eventually it got to the point where I decided it wasn't a joke and decided to ignore A as much as I can for the remainder of the trip. THE JUICY BIT: The last day of the trip, A, M, and I were at a restaurant. M acted childish and was throwing chips at me. I joked back by pretending to mention to the people sitting behind me that chips were landing there. A as usual reprimanded me for my behavior. I asked A "why not say anything to M" and A said "You should be consider yourself lucky that I so tolerant of you." Flabbergasted I told her "why even bother tolerating me". She then warned me " I may not go back to NoCal with you if you keep up this behavior." I'm thinking to myself that I drove us down in my car and I went out of my way to take her to her house and everything with little thanks. So I responded saying "why make it a warning, lets make it a reality; I don't want you(A) coming back with me." I rarely ever get angry but when I do I don't hide it but I didn't raise my voice. I was very stern though and the group realized I was very upset." The table went quiet and M tried to alleviate the situation with some joke but A and I both stopped talking. I drove A and M back to M's house and announced to M's family I'll be leaving. A started packing and I reiterated "you're not welcome to come back with me." A acted shocked and asked "are you serious," which I confirmed. I drove off still fuming in anger. After about an hour of discussing this matter to my gf (same from toxic relationship but we worked out a lot of our problems) convinced me to drive back and give A a ride as i shouldn't leave her like that. A and my gf hate each other and my gf saw this as an opportunity to take the moral high ground for both of us. I didn't agree, but regardless I called M letting her know I was driving back if A still wanted a ride. M let me know that A is taking a bus back and doesn't need to the ride. I never communicated my problems with A to the rest of the group since I didn't know how serious it was until too late so they probably just see me as a monstrous asshole. What do you guys think? UPDATE: A has yet to tell the rest of the friend group and we're planning a group skype so idk what to do.