Do women racially discriminate more than men when it comes to relationships?

I was reading something which said that only women racially discriminate with relationships, although they are less likely to be overtly racist. I was wondering whether it was that simple, because there are far more white women married to black men than black women married to white men. Surely this would most likely mean that it is either black women discriminating against white men, or white men discriminating against black women? In a world where white men are most often more successful than black men, this seems questionable(and by comparison Asian women and hispanic women discriminate against white men barely at all). This leads me to beleive, that a large part of it is white men discriminating against black women, unless it is black women having an overwhelming amount of racial loyalty. What do people think?