My old roommate likes to White Knight blacks/Mexicans and use the race card.
I don't know what Black chicks your roommate is white-knighting but, as far as I know, Black
women don't go for that shit: They're as real as it gets. If your breath stinks, if your teeth are yellow, if you're soft, if you suck in the sack, if you're unattractive, they let you know right there and there. No games.
I've always said, and can't get tired of saying it, if you want a White chick and she's giving you the cold shoulder, get a Black chick and parade her in front of the White chick. See how incredibly interested in you the White chick is all of a sudden going to become. That and, in doing so, you'll find out how incredibly hot Black chicks are.