I was in a relationship with a man for nearly 2years, only to find out he was married when I fell pregnant!
I worked with him for about one year before we got together. I knew he had "been" married but he told me that he and his wife had split up and her job was taking her to Ireland.
I spent time with him and his kids, he showed me the for sale sign on the house, I even met his parents (he introduced me to them by saying "this is Tartan, the girl I've been telling you about)
When I fell pregnant the truth came out. Yes, her job had taken her to Ireland...but only a couple of days per week. The house was up for sale because they were selling to buy a bigger one.
I'm pretty sure she looks at me as the slapper who tried to steal her husband but had I known the truth I would not have touched him with a ten-foot barge pole. She sent me a lawyers letter (she is a lawyer herself) stating that I may be called to court as a witness in divorce proceedings but it never happened, I think that was just to hurt and humiliate me, and although I can see her point I was already hurt and humiliated enough.
I was left a single parent, painted as a homewrecker and left thoroughly broken.
Yes, there are some women who enter into a relationship with married/taken men and don't care. But some men are black belts at lying and cheating and pointing the finger of blame elsewhere.