So, a couple months ago I (19f) decided to unfriend my best friend (20f) of a year. We met during my freshmen year of college and her sophomore year when I invited her to join my friend group, as she seemed nice and didn't have any friends besides her BF (ex now). We quickly started hanging out almost everyday with our (now) mutual friend group and things were good for a couple months, but she starts to do some weird stuff. The problem is there isn't one specific event that caused me to unfriend her, but a multitude of small/medium problems. I guess I will just list some of them in chronological order with the months (we became friends in Sept 2023ish). Sorry for the wall of text.

1. Nov23: She complained about her boyfriend at the time being controlling because he didn't want her to get drunk in a hot tub with two guys he didn't know. She ended up cuddling one of them all night (IMO cheating on her now ex). Definitely first red flag of her character.
2. Nov23: cuddled same dude again while still with her ex. I want to tell him but honestly its probably better for him if he doesn't know since they've been broken up for a year and it would just cause more drama.
3. Jan24: Forgot her headphones after winter break and instead of borrowing my air buds, asked us to drive her FOUR HOURS to grab them instead of waiting 2 days for them to ship. We ended up declining and her dad drove the four hours at 5AM the next day because she lied to him and said she forgot all her school stuff.
4. Jan-August?24: I am an extreme lightweight (I drink ONE drink on a night out because of my meds). She was the opposite and drank sometimes 12 or more drinks but insisted that we split the bill because "that is how they would do it at a bar" and wouldn't let me pay for just a beer out of the 30 rack we would get (I was still gonna overpay for it). Finally put my foot down after like 6 months of this and started just getting my own stuff. She probably owes me $100 in just liquor lol.

there's more stuff in that Jan-May time period but I am going to omit some because it would be a lot if I included everything.

1. May-October24: On the topic of money, she charged me a LOT for gas money for places we were both going to. For example, she would pick me up to go to the mall and back (my house is on the way) and it was about 40 minutes roundtrip. I paid $15. I don't drive almost ever and I think she used the fact that I didn't know gas millage to charge me more. Side note: she drove my boyfriend all the way into the city and back (2 hours) and didn't charge him AT ALL. She also probably owes me like another $100.

2. June(?)24: We went to a party and everyone (5 people) wanted to leave but her, so we didn't leave because she refused lol.

3. July(?)24: Me, my boyfriend and her went to my boyfriends lake house, which has two jet skis. She got her own and my boyfriend and I shared one. I am really scared of going fast, so after a couple hours of her zooming around the lake and my boyfriend and I chilling out and going slow (which she burned an entire tank of gas lol), my boyfriend unloaded me to her so he could go fast for like 15 minutes. She knew I didn't want to go fast and, if you know anything about jet skis, you'll know there is literally nowhere to hang on if you're on the back. She immediately started going ~40MPH and I was so scared. I was literally begging and pleading her to slow down, but she said no. Literally no. Eventually, she made a really tight turn and I flew off and smacked into the water. My boyfriend came to my rescue before her. When she approached, her apology was very lacking in empathy. I was bruised and couldn't sit properly for a week. Probably one of the most scary experiences of my life and made me loose a lot of trust in her and start to doubt her caring for others.

4. Sept(?)24: She randomly admitted she used to drunk drive in high school by saying she cries to a song about drunk driving? She said "how else was I supposed to get home?" I don't know, call your parents? You might get in trouble for drinking but it is way better then putting others lives at risk. Such a weird way to get pity. "I used to drunk drive guys :((((" Also when I say it was random, we were literally eating Wendy's or something.

5. Nov24: Recorded a girl in our suite singing in the shower and showed our friend group what a "terrible singer" she is. A couple days later, she blows off our plans to go hang out with her. This is when I really started to doubt her character. I confronted her the next day about how weird it was to RECORD SOMEONE IN THE SHOWER (??) and then go pretend to be their friend and she looked me dead in the eyes and said "that never happened". I think my jaw physically dropped.

6. Nov24: I got locked out of our suite and she wouldn't walk 5 mins to let me back in. I would of obviously done that for her.

7. Oct-Nov24: There is this one part of our town that is pretty dangerous and overall just not good vibes and she would only want to walk there at like 11pm. She knew that it scared me and would call me bossy if I asked to go literally anywhere else. Note: There is nothing on that side of town but a gas station. I have a theory that the only reason she wanted to walk there was to make me uncomfortable.

Of course, there is more instances then this and I can elaborate if needed. There are some more complicated situations that would need more backstory as well.

I unfriended her in January of this year, after I realized how peaceful my life was when I wasn't around her all winter break. Why I am asking if I am the asshole is because I did not talk to her with my concerns before unfriending her. I also told my friends how she had treated me a couple hours before unfriending her because I was scared she would lie to them if she got to them first. Even though I think this was out of necessity, I feel a little like I went behind her back without giving her a chance to explain herself. My boyfriend says I should of tried to work things out with her and I get why he says that, but her lack of empathy for others, her lying and her walking over my boundaries made me assume that talk would of only hurt me, as she probably would of started compiling evidence to get me kicked out of my friend group. I had also told the girl she recorded in the shower how fake she was being and she overheard. This was definitely a mistake to tell the shower girl in an area that she could overhear. The shower-girl was the only girl I told outside the friend group what happened because I felt she deserved to know more then anyone, and it probably seemed gossipy talking to people more distant. Although I feel valid most of the time, I still feel doubt that maybe these were all innocent mistakes and she would of fixed them if I talked to her? So, AITAS?

Side note: when I told my friends what she did to me, one my friends came forward and said that she danced on their SO right in front of them. This ultimately led to their breakup because of her.