So, my disconnect with reality is showing, but how is a furry femboy "straight"? Last I checked a couple of years ago, femboy meant feminine boy, not female (i.e. woman; that which must not be defined).
Straight and homosexual in this context means that you are either attracted to feminine or masculine features. For instance, I am heterosexual, but I also admit that I like femboys because of their feminine nature and appearance. However, I don't like masculine men which would universally be a sign of homosexuality.
I'm sure there are homosexual men who exclusively like hyperfeminine men, and that's fine, though I don't think that I'm gay because simply because I like femboys who have little to virtually no difference when compared to women. In fact, I think it's the opposite since it's easy to get fooled by a femboy, hence why there is a trend of it being gay or not.
Whether if I am hetero or bisexual is your opinion, though
my opinion is that I'm heterosexual because of the way I see it.