Baby momma drama

I’m 22 years old. I gotta deal with a baby momma from hell!!!! One day she acts all cool and good with me, then the next it’s like she wants me gone and would do anything to keep me away. Ima bout at my wits end. It seems like my partner ALWAYS has her back. Never mine. Like she called me a bitch before and he didn’t do or say anything. Like bro, she just called me a bitch right in front of you. But if I say I think she’s rude, I’m apparently over reacting.

How do you lady’s deal with your bf or husbands baby momma drama