It's strange that a lot of people seems to like this show. I found this first episode mediocre or average at best. The acting looks very weak to me, the plot a little forced, the overall is odd. I dont know if i'm gonna watch the remaining episodes.
Preference is a complex thing, some part of it are inner/natural, another part of it could be explain by the context(includind familiarity with other races or by the influence of media and stereotypes on people's mind) or the culture. But at the end of day, by no means one should feel "inferior" because their is a possibility that another one isn't attracted to him.
Someone else desire towards you doesnt really depends of you for the most part(of course you could try to have those traits most women want : some muscles and abs, but it doesnt do all of the seduction). Personally i'm attracted to all races, but with a preference for black guys, especially middle africans and some west africans ones( the both of Congos, Cameroon, Nigeria, Ghana, Ivory Coast, Gabon). I'm not searching for any race approbation, i just dont care. I flirt. If one isnt attracted to me, i move to the next one.