I am so sorry you are in this situation @Nkst

Your boyfriend's mom sounds like a walking horror show. She's a THERAPIST??? Lord help us all.

Yes, you are in a relationship with your bf and his mother as well and this may be hard to hear but it will probably not get better unless you leave him, at least take a break. She sounds deeply unhealthy and abusive and problematic.

Please know that if you stay you can use as many boundaries as you need. You are not the problem. She is.