Is AUTHOR wrong in the post ? POST : For context, my best friend (B) has been in a weird codependent fwb-but-not-really situation with her physically and verbally abusive alcoholic ex that she drives everywhere because he doesn't have a license. He's made her cry countless times, flirted with other girls while they were dating, and he broke up with her but he can't let her move on. 

As a result none of our friends like him because she ends up crying to us time and time again when things don't work out between them. I've only ever been polite to him whereas others have flatout refused to go out if he's coming. Despite not wanting to see him she's dragged me out with him numerous times and I put aside my feelings for her sake.

B's birthday is coming up so our friend group decided to go out for her birthday.  As we're planning out the finer details, she drops the bomb that she invited her awful ex. Both myself and a few others in our friend group said that we didn't want to go if he was coming out and we could do a separate celebration without him. 

After going back and forth how we didn't want to spent time  with someone who hurt her countless times for a good 15-20 minutes she blows up saying we can't even be nice for one day for one day, how she's heartbroken about it, he took the day off to go with us, and how we made her feel like shit. She essentially dropped everything we planned to accommodate him. 

At this point I'm mad because we spent weeks planning with her and spent $60+ on the matching outfits she wanted us to wear (which is a whole other story).  I told her at this point she's choosing him over everyone who's supported her for the past 10 years.  Tbh I'm just so tired of all the bullshit and the drama surrounding this guy. I give her an ultimatum: either she chooses him or me in her life. 

B told me not to make her choose and tried to get my sisters to convince me to not make her choose. She cancelled the plans to go out all together and threw herself a pity party; basically telling all of our other friends I was being selfish and ruined her birthday when I put my foot down ONCE because I don't want him to ruin the night.

Im angry and hurt because I've bent over backwards to be a good friend over the years including opening my home to her when she had nowhere to go. B apologized later but it was a "I'm sorry but you should also be apologizing to me". I'm the type of person who needs time to cool off so I told her just that.  Instead of respecting that she got drunk and spammed me with messages saying "K so I have no friends" "So have a great life" "Probably see you at our school reunion" and the worst was one saying "You're the only other person I've cried about so I hope you're happy." I haven't spoken to her since. 

AITA???