Really weird vibes going on right now..

Delete if not appropriate for this sub. I need to rant somewhere. My bf and I have been together almost 4 years, we plan on getting engaged and married when we both aren’t broke. We both have great relationships with our parents, his parents have been nice since we started dating (though I’ve always felt like his mom disliked me). His mom has always annoyed me but there has never been a real reason, she’s just an average white wine mom who thinks her alcoholism is cute and quirky. She is pretty overbearing and annoying about my bf’s time and how he spends it though. She’ll plan vacations, he’ll say no because he has work or he just doesn’t want to go and she’ll flip out about it like he had already agreed to it. When he never did. She’ll ask us to hang out on his one day off but he doesn’t enjoy being around her when she’s drunk either so he usually says no unless it’s really early in the morning like breakfast but even then.. he’s worried they have already started drinking. We do go to their family get togethers, birthdays and we go over sometimes just for fun. His mom has always tried talking to me but she literally always asks the same questions because she’s always drunk, it’s annoying. I always entertain her but I try to keep my distance because I already know our entire conversation, we’ve had it over 100+ times the past almost 4 years. She acts like a college kid when she is drunk and so does her husband but he isn’t as much of a problem as she is. They’ve had us come over before and just drunk ranted at us and tried telling us how to live our life, it was WEIRD but we left and everything was fine. A couple weeks ago, we went to hang out with my bf’s family. She was already drunk with her parents and husband when we got to the house. His cousin was in out of town. We hung out and a couple hours later we started to say bye to everyone but she for some reason thought we were staying the night even though he quite literally never agreed to that. I’m spacing out while watching my bf hug his gma. His mom out of nowhere gives me the most annoying bitchy voice ever and says in between tears, “you need to let him see his family more, we are his fucking family.” I glared at her and said “ew wtf, you’re weird” and started walking towards the door to leave. She follows after me and yells so everyone hears (because everyone was literally in a good mood and in their own worlds) “OH IVE MADE HER MAD!” and I just responded “no one wants to be around you when you are drunk and crying.” to which she responded to by saying “OH, YOU BITCH.” My bf pushes me out the door while his mom is screaming at me, “I HAVE TRIED TO MAKE YOU FEEL LIKE A PART OF THIS FAMILY FOR SO LONG…” blah blah blah.. We left and I had to explain to him what happened because he was hugging his grandma. Everything happened within like 1 minute lol. He said he’s going no contact with them after I told him about what happened, they’ve been alcoholics since he was a kid and he’s used to the way they act but she flipped out on me. That’s weird. She didn’t even apologize after it happened either, she texted him saying “I hope you don’t stop talking to us because of this.” Which he had already decided he wasn’t before she texted that but her sending that instead of an apology just made it worse. We aren’t going to talk to them unless they stop drinking which they won’t, they’ve been like this since he was a kid. So yeah.