I think a lot of women blame ow, as it is easier to hate her than to hate your kids father, If I hated him I hated bits of him in them, so I stopped and concentrated all my hatred at the betrayal onto her, it made for a better life for my kids...
At the end of the day, I later found out the ow in my case, was probably one of the one's who falls into the bracket of having pushed down her hatred at her mother to the point of hating married mothers, so their husbands were fair game, there is also a theory, I have read up a lot about it to understand it, to stop myself getting involved with another man that would do the dirty on me, and the other thing is they often hate men also so want to wreck their lives, it is all rather sick.
The ow in my situation, had an alcholoic abusive father, a mother who sounds odd, and did not want her and worked two jobs and sent her to two childminders, then got involved with another abusive alcholic and allowed her child to be abused again, so there is huge anger issues to do with mothers and fathers with her, which she has used my family to work through! Her father and mother went for years through court, and it turned out her father wanted to make her mother look unfit, and now her mother is a social worker to decides who is a fit parent to adopt kids... oh yes and ow, seems to only have relationships with mentally deragned men, and low and behold ex has beend diagnosed since getting with her by a psychiatrist as having mental breakdown adjustment disorder, ex took me to court, oh yes to make me look like an ufit mother, it is all so sick, she had no money, so ex wants us to have no money, she had no dad and no conact, so ex has not contact with kids... it is her stuff he allowed to poison the kids with.
Believe me you are best off away from men who have affairs, they are liar's, selfish, cheats and dangerous!
I hope that you can make a new life for yourself, and trust me she will make your ex pay, and she will pay too, leave them to their madness they have dragged you into!