Dear Michelle:
I know the feeling of giving another person the power- it is a very frustrating experience, a humiliating experience.
It makes me think of the power dynamic in dogs (and other animals). When a dog encounters a more powerful dog, the weaker one, believing he doesn’t have much of a chance to win a confrontation, feels no anger and rolls over on his back.
When a dog encounters a dog of lesser power, believing he has a good chance to win a confrontation, he/she feels angry, then growls and threatens aggression.
Your friend, seeing that man as having the power to give her something she desperately need, is naturally not going to feel anger at him. On the other hand, she feels angry at the woman he cheated on her with because she doesn’t perceive that woman as powerful, as one capable of giving her what she needs, that validation that you mentioned.
anita