There's a whole lot of guys out there getting a whole lot of sex. If she's fantasizing about somebody else - as men often do - then so be it, as long as she's still there in the morning when you wake up.
Men are largely about tits and ass, but women have a variety of attraction triggers. Make yourself as desirable as you can and look for one that responds. As I said, marriage is still pretty popular.
But it sounds to me like we've reached your logical limit. I think no matter what I say, the response will be "To hell with the evidence, what I say is true therefore the evidence is wrong."