Enough to end the relationship? Bf and his 2 faced mom

I’ll try to make this short as I can, but my bf is such a mamas boy and it’s really getting annoying. We are in our 20s and we live together in our own house so it just seems childish to me. (We’ve been together 2.5 years) Maybe I’m insensitive or being a bitch because I have no relationship at all with my mom but his just seems to be excessive. He calls her at least 3 times a day every day if not more, he invites her over multiple times a week, and he involves her in allll our problems in our relationship. I mean every. single. time him and I get into an argument he calls his mom and will sit there telling her all our business right in front of me then put her on speaker phone so him and her can both yell at me and pretty much “gang up” on me because she never thinks he’s in the wrong, I’m always the problem when she’s talking to him. He will even tell her to show up during our arguments and she comes over to play “mediator”. She’s so 2 faced because when it’s just me and her she says she agrees that her son can be ridiculous at times and that he’s stubborn and definitely in the wrong most of the time but she just doesn’t say that to him because she don’t want him to turn on her then when she’s talking to him it’s the complete opposite and IM always in the wrong etc. For example about a week ago I was telling her I’ve kinda been thinking about taking a break from my bf and I’s relationship because it’s just getting overwhelming for me and I’m tired of him airing out our business to her like I’m a grown adult and don’t wanna be with someone who has to involve their mom every time we argue. It makes me feel disrespected and I’m over it. She was trying to talk me out of it and telling me how much her son loves me and that we shouldn’t take a break we just all need to work on boundaries she’s sorry blah blah so she literally drove me back over to my bfs house and the very next day him and I got into an argument and he of course calls his mom then she’s on speaker phone screaming at the top of her lungs at me cussing me out (along with my bf who is also yelling at me) she was saying I need to “get the f*ck out of her sons house” and I need to “grown the f*uck up and leave” when she literally drove me back over there just the day before trying to talk me out of leaving him over this exact issue ?? It took everything in me to not flip the hell out on her. I’m just beyond over it and think this is a definite deal breaker. I’ve already voiced to him and her both that I’m tired of it and that it needs to stop but clearly they don’t care it just keeps happening. Would this be enough for you to end a relationship?