Have you ever been in a toxic abusive relationship with someone?

My ex wife and I have been trying to work things out as FWB’s. and things were going good with us for a bit , but it sadly turned to shit again , she all of a sudden treats me like shit and acts like everything bad that happens is my fault , She expects me to take care of everything while she goes and does her thing , I realized I was stupid for allowing her back into my life and told her she has to leave , she doesn’t want to work and thinks she should be catered to at all times , I recently got laid off from my job with a nice severance to buy me sometime to find another job, that I am having a really hard time landing , My wife has all of sudden started treating me like shit and putting me down, and criticizing me and belittling me and comparing me to other men , mainly her girlfriends husbands she points fingers at me , that everything is my fault. She no longer wants to be intimate and affectionate with me , I told her she is best to leave and to go live her life elsewhere, because she is not a partner to me. She makes excuses as to why she can’t work and acts like it’s my duty to take care of her and everything else. I have no support from her whatsoever , she is sadly a very selfish person and a user , even our kids are making comments about her behavior towards me , and my kids are fed up with her as well. Am I wrong to feel this way of being used by her? She also made a new girlfriend that caters to her , I honestly think they are gay for each other. Her friendship with this girl is very odd to me, it’s complete opposite of her other friendships. My wife also suffers from bipolar disorder even though she denies it , the doctors diagnosed her with it , she also suffers from severe anxiety and depression and her health isn’t good , her doctor said she probably doesn’t have much more time to live , so another reason I felt sorry for her , but now I feel she is just buying herself time to find herself another dumbass to take care of her.
Have you ever been in a toxic abusive relationship with someone?
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