Allow me to explain my strange sex education:
  a) 11 years old, mom throws me a set of four books about sex for
  kids. This is back in 1983. Some version of a "what's happening
  to my body?" book.
  b) 14 years old, I'm in the public library. I find an ancient
  book:
  https://s-media-cache-ak0.pinimg.com/736x/36/22/d0/3622d077f4c96dfb2251c71e27fb55ce.jpg
  which I read with fascination. Charts, statistics, things about
  spectrums of attraction and such.
  Never read the one on female though. Really I should get around
  to it.
  So, I've always had spectrum view of sexual attraction.