Men aren't even as likely to be faithful with a woman who makes the exact same amount of money as him as with a woman who makes 75% as much as him, and if he's financially dependent on her, he's 5 times more likely to cheat:
Men more likely to cheat if they are economically dependent on their female partners, study finds
I'm going to guess this is because men who will live off a woman are womanizers anyways. I am always surprised how such successful women always have such dirt bags as boyfriends.
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Frankly, every time I hear about someone being abused by their S.O. in the manner many here are talking about, I just get angry. At both people. people who do it, and their partners that put up with that shit.