>Just before every "break" she told me that I had been abusing her and mistreating her while I brought her to nice restaurants and did a lot of things outside having fun and such having sex with her was also great if I may believe her.
"Re-writing of history - It doesn't matter that she was sending you love notes and texts a month ago. She has been unhappy for a long time now."
I call this the light-switch effect. And it happens when a woman is no longer attracted to you and is moving on, whether or not she cheated.
It's not that she's discrediting all the past good in the relationship, she actually believes it never existed. Let me expand on that a little, and tie it into what we call Briffault's law.
Women use their emotional state to define reality- we already know this. When a man feels an emotion, he asks, what could have caused this emotion? Is it reasonable and rational? Perhaps it is, or is not, but exploring this line of reasoning is how he determines whether or not his feelings match objective reality. If the facts don't line up, perhaps his reaction was wrong.
When a woman feels an emotion, she uses this as her objective reality. Why would she feel betrayed unless somebody had betrayed her? Why would she feel sad unless somebody or something made her sad?
Therefore the decisions she makes based on her reality may seem like total nonsense to a man (women are crazy, right?), because she has determined her reality based on the only prime truth she knows: her emotional state. If a woman is sad, she tells you "you made me sad." She didn't decide her emotional state, you did. Changing her own emotional state is outside the purview of her control.