All of those mental barriers in your head are socially conditioned. I'm not trying to discount the extent of that social conditioning, just the validity of it in 2015. Your thoughts shouldn't be 'I'm black. She's white. I need to accommodate my approach to acknowledge those differences.' People are people. Women are women. Some girls won't be down. So what? I'm not going to lie and pretend that every white girl's gonna be receptive; that's just not reality.
But even in the deep south most of my black friends have pulled snow bunnies at some point--and not just overweight hoodrat white chicks; I'm talking preppy upper middle class daddy's little girls.