(I guess it's because since they like everything black, that they fancy the black hair of Asian men?
lol) However, even if you date these subset types of white females, still the probability of long term success is low, so be prepared for that and don't take it too seriously or fall in love too deep.
There is Good News for you, if you're willing to look outside the box that is. First I want to admit that there are always exceptions to all this of course, just as there are with every general tendency or pattern.
But these are the fundamental truths that explain why Asian male / White female pairings are less common and less compatible in general, then Asian female / White male pairings.
Looks matter a lot to White women and they won't give a guy a chance unless they are "physically attracted to them" per their own words.