boyfriends female friend

Norah
ok so my boyfriend has a female friend but she has a boyfriend plus 4 kids so I know nothing sketchy is going on between them anyways there was this one time where me Nd him had our problems and ofc he told her about them now I feel like she sees or knows how problems and it's embarrassing for me don't get me wrong I talk to my friends about my problems I just don't know. now she messages him and said I don't wanna piss her off you sure? Ok I'll add you if i get back on fb. I am just hurt because why can't he let me know? I just hate that he would go ahead and say yea you can add me dw about her . I talked to him about talking to her and he said I didn't tell you because you always get mad and start a fight. And I said I mean yea I'll get mad but I'd rather you tell me instead of not now I just feel disrespected like my opinion don't matter.....