12% of women under 35 on OkCupid (and the internet in general, I'd wager) self-identify as bi. However, as you can see above, only about 1 in 4 of those women is actually into both guys and girls at the same time. I know this will come as a big letdown to the straight male browsing population: three-fourths of your fantasies are, in fact, fantasies of a fantasy. Like bi men, most bi women are, for whatever reason, not observably bi. The primacy of America's most popular threesome, two dudes and an Xbox, is safe.