So my brother and I have different fathers. We both lived with my mother and for as long as I can remember my mother had always referred to my brothers step mother as "the evil slut". I remember vividly the screaming matches my mother would have with my brothers dad and even more vividly the effect it had on my brother. I watch from the sidelines as my brother learned very well how to manipulate his parents and his step mother. I remember at my brothers sporting events my mom would sit with her friends and snicker about his dad and step mom. I was basically instructed not to ever talk to or associate with my brothers twin sisters from his dad.
I learned that this awful evil woman had stolen my moms husband, got knocked up on purpose and treated my brother like shit.

Everyone is all just fantastic now, my mom and my brothers step mom can be the bestest of friends when we are all at a gathering which involves my brother. As an adult I still have completely unwarranted feelings of contempt for this woman. And in the light of adulthood and the capability to put two and two together, the truth of the matter is my brothers dad left my mother when he was young, my mom
Ended up pregnant by another man (my dad) not long after and tried to pass me off as her ex husbands. I was a keep a man baby. I don't know why this woman gets on my nerves, she never did or said anything to me and she had no affect on my life. She was never an evil step parent to my brother....I feel bad for her now being a step parent myself.

I just hope the BM in my situation doesn't do and say the things that my
Mother did. Idk how my brother feels, we never talk about those sort of things, but I can only imagine.