Thank you for your responses.

I can turn my "love" off like a light switch. I don't know why, but once a woman does something, anything to make me angry I no longer love her. My ex wife used to say that I had no empathy for her. And perhaps I did not, for I felt she also had no empathy for me. When I heard her crying about how I had hurt her, it did not touch me once the "light switch" had been turned off. I hope this makes sense... to someone.

I went from being absolutely in love with her to hating her.

My fiancee does not make me angry at all.. I have not felt the niggling doubts that I had about my ex wife. My ex wife would stand up to me, would tell me I was wrong, would make me so very angry.

I keep thinking that the fact I can't forget my ex wife is because she made me so angry. Now I'm wondering if it isn't something else, and I'm using my fiancee to replace her.

I'm very confused, I did not expect to be at this place in my life at this age.