Why do black men bully black women for dating outside their race?

I've been called a bendwench by a couple of black men just because i find white men attractive (I'm a black girl btw). And i see online i see black people (especially black men) who call black women names such has "bedwench" or "white mans whore or "slave master". They go online and complain about how much they hate us. Especially for dating outside our race. And it's childish and annoying. Why do black men call black women "their women?" Or asking white men to "stop taking our women" even though we don't belong them. I don't see white a bunch of white men go online and complain about white women as much as black men...........