So my boyfriend and I been together for a year and 2 months and I met his mother the day after he asked me out so basically known her for as long as my relationship. They always fight when I fight u mean yelling, she hits him, steals his MONEY, kicks him out. Obviously I don't say anything because it's not my business but now it's gotten OUT OF CONTROL. They start arguing even when I'm with them! Before she would hide it and so would he, but now SHE just argues with him about anything. How he eats,talks,walks,sleep and everything else is a problem for her . I sometimes try to avoid going out with all his family because his mom will argue with them all the time no matter what, and it makes me feel so uncomfortable because there's nothing I can do or Say, I'm basically just sitting quiet and watching them.There's been many times where he told me she steals his MONEY from his bank because she is the one who made it. All his paycheck is divided half for him and half for his account, he has $400 I'm savings which he doesn't even have permission from the bank to use it, only his mom can take money out. He asked for $40.to pay his phone bill and his mom said he only had $20 in his account but he didn't spend a penny. She clearly took it for herself and this happened so many times and I've seen it happen in person too. She got a phone which she couldnt pay for and told him to pay it for her right after she took $300 for "rent". He ssid he couldn't and she got mad and said I'm gonna kick you out watch. The thing is how do i tell my boyfriend that his mom is a mean person without sounding like a bad girlfriend, because she's super nice.to me but not with him or his sister. I dont know what to do in this situation.i need advice.