AITA for my reaction to my boyfriend’s ex’s parents disowning her for being in a relationship with me?

My(23F) boyfriend(25M) was a foster child and was raised by different people, he never had a stable home until he was around 16. I also grew up in a difficult situation but that’s not important. It was a hard life for him and he also had a lot of bad experiences in his relationships and friendships.<br><br>He met his ex(23F) in college, she comes from a wealthy family. She has very strict parents who wanted her to be a girlie girl and wanted her to go to a certain school and have a certain career and they were also strict on who she could date. She rebelled and got into alternative stuff and went to the college she wanted to and met my boyfriend there. They had a s**t relationship, he was unable to say no to her and she was very clingy and controlling. She told her parents about him and her parents threatened to disown her if she continued to date him. They broke up because my boyfriend couldn’t deal with her anymore and she went back to her parents and they set her up with the man she is currently dating. She is just like her parents look down on my boyfriend and said some pretty nasty stuff about him to me.<br><br>Anyway, I met my boyfriend at work and we started dating a year ago. We are serious but not moving in together serious. My boyfriend told me about his ex but I never thought she would care that we were together. She recently found out and contacted him super nastily and told him to stop seeing me. I was shocked he told her that she was not to contact him again and blocked her. I told my boyfriend we should ignore her and he agreed.<br><br>There was an event at the place we work and she showed up with her bf and started shouting at me and saying really nasty stuff about me and my boyfriend and just went on and on and on. My boyfriend and her boyfriend had to wrestle her out and she was still going at it right outside the door. At that point she accused me of stealing her bf and said some really really nasty and gross stuff about how my bf was making love to me. I snapped and told her that I was not the one he was in love with, I told her that he loved me and was heartbroken when she left him and she didn’t even notice, I told her that I was the one he was having sex with and making love to and that I was the one he wanted to spend time with and that she was so insignificant to him that he didn’t even care that she was angry that he was with me.<br><br>She started crying and wailing really loudly when I said all that. I didn’t even register it at the time because I was super pissed but her bf and my boyfriend told me she started crying and wailing again when she got home and her parents heard and wanted to know what happened and she told them. She told them what I said and her parents said that it was her fault that my boyfriend said those things to her and that she was an embarrassment and she was disowned. Her bf told my boyfriend that she didn’t leave her room for the entire weekend and that her parents didn’t care.<br><br>She is now calling and texting my boyfriend nonstop and begging him to tell her parents that it wasn’t her fault. Her bf won’t stick up for her and is even taking my boyfriend’s side. I told my boyfriend he shouldn’t bother and she deserved it but my boyfriend said that he can’t be the person to get her disowned because even if she is nasty that’s her family and he knows what it’s like to lose the people who are supposed to care for you. I told him that he doesn’t owe her anything but he still wants to talk to her parents. I told him if he does that then we’re over but he said my reaction to her tantrum was over the top and he’s going to talk to her parents.<br><br>AITA?