This is more apparent in men, since men and women are different in their sexual nature and female arousal is not as straightforward. But women who make terrible dating choices are fundamentally no different to the men. Sexuality is primitive and desire makes people make idiotic choices and ignore warning signs. Why did the guy get together with his psycho GF/wife? The sex was great. Why did the woman get together with the psycho BF/husband? The sex was great. How often do people have the self-awareness and integrity to admit they were seduced and played with? Not often enough. Women are just as primitive as men when it comes to this.