There is good evidence (for example http://blog.okcupid.com/your-looks-and-online-dating/ is quite clear) that of women are only sexually attracted to a small percentage fo men, and I think that is because most women are only sexually attracted to men that are a couple leagues above their own (I think that happens because they reckon that possession of a reprodutive, not merely sexual, organ is worth a couple of leagues premium).

The result is that the few men who are a couple of leagues more attractive than average women get inundated with often very forward and even abusive demands for sex from average women, and average men, who are deeply unattractive to average women, being a couple of leagues below what average women want, get “friendzoned”, and since men project and think that most women are attracted to most men, they mistake that for a first sign of sexual interest.

Which may be the opposite, because I think that for women sexual attraction and friendship are mutually exclusive. Most women don’t feel any sexual attraction for their “girlfriends”, even the male ones.