I don't quite follow. That sounds like the friend zone bro. If a girl has been desensitized to sex, its easier for them to leave any given man. A woman is supposed to bond with a man through sex. The way to her heart is by her vag ( in non broken women).
I don't believe in love, and I know that a heart is nothing more than a blood pump, so I guess we just see things differently.
If she wants to attach to people through sex, more power to her, but I don't assign any special meaning to it. It's just a hole.