it only matters in the since. that your phrasing made me think that maybe you're not black.
an i have seen some recent posts on this site with non black guys preferring black females. :)
far as dating/sex etc. it doesn't matter to me if the races are different.
also you went out of your way to mention being attracted to black females. (instead of just saying. i think she's attractive/hot etc.)
so it is a fair question to ask. :)