Hip-Hop's final taboo

I'm working on a story for XXL about rappers and their relationship issues and it got me to thinking: You hardly ever see a rapper with a cracka-ass cracka girlfriend.

Not to suggest that this is how it works, but clearly they've got enough money. In the NBA, where you find a lot of young brothers with a similar level of income, this goes on all the time. In hip-hop? Not so much.

I wonder why is this so. Do rappers fear they'll be considered less real if they date a cracka-ass cracka? Are rappers banging a lot of white chicks on the low, like the X-Clan back in the day, and dragging around broads like Trina to keep up appearances?