Why don't white guys like black girls?

well it started like this i was at school and i asked my friend if he would date a black girls and he said he would never date a black girl and he said not to be racist but that still hurt me inside and i asked my other friend the same question and he said ALL black girls are not his type and i was shocked to hear him say that by the way i am 16 yrs old and i haven't dated much white boys i usually date Hispanics alot but i really want to date a white boy for a change and my mom she wants me too marry one idk if shes being racist to our own skin color idk but are white guys racist and i know some boys don't like us cause they think we are ghetto but i am not ghetto but do white boys like or not?