Most women do not want to always play the role of the man's mother in the relationship. Let it in from others and give it yourself. Madonna Whore is a projected archetype wherein a woman in a man's life who has the serene, wise, and pure Madonna presence is somehow brought down to dirt level sexuality. I like author Nancy Friday's idea that this charge is fantasy payback from men for the shaming we received as boys from our mothers. Our mothers were just part of the delivery system.
Culture splits boys off from their bodies and nature.
Mothers shame them and fathers drive them into their heads to realize the male performance mystique. Both parents cooperate in this emotional circumcision. But now we are grown and we are left with this charge. A man transcends this predicament by creating relationships where there is a lot of mutual acceptance for mutual weirdness. Warts and all.