In reality you can do what you want marry who you want and procreate with who you want.
But most people will not take you serious as a pro black with a non black partner. It's that simple. There are few things more important in this world than who you choose to be the mother or father of your children. When you marry you basically combine lives. Every black person isn't pro black some say they love everyone equally or they don't see race. But if you're pro black your partner will be black.
Would you consider Tariq Nasheed "Pro Black"?