I've kind of noticed this in real life too.. it's almost like they're sick of dating guys and no longer attracted to them.
Most Helpful Girl
Sexual orientation isn't something anyone decides on so it's not like a woman can get sick of dating guys and then magically turn on her attraction for females. If she didn't have it to begin with then it can't be created. I'm not bisexual or bicurious and I'm only attracted to men.