I use to think it was just a southern thing, but its not really. Its pretty much like this everywhere, granted you see it bit more diverse in certain area's Texas comes to mind as one of the few places where I've seen black and white people mix in really really well.
White chicks that dig black dudes usually are Fat, emotionally scared, have some type of fetish for the media portrayed image of what black men are or down right hoodrats or freaks.
In my 30 years down here I want to say I've seen a handful of couples when both people looked or appeared not to give up there culture or background and where happy together. I still haven't a couple where its a dude who looks pretty hiphop and a chick that looks really country.
Now behind closed door's THEY LOVE US. You can smash randomly, be there best friend's... man it goes on and on.
But date.....
once there over 35+ though they'll go ahead and lock down a black man or randomly adopt a black kid in a heart beat.