If anything I imagine discovering this part of sexuality can be even More confusing with trying to understand why your brain and hormones react so strongly to a well endowed man or a woman with a big rack, realizing this and screaming at your body to "MAKE UP IT'S MIND!?!?!11!elventy-one!1"

This. Oh dear heavens, this. I knew about homosexuality as a teenager, and I knew I wasn't gay. But I /didn't/ know about bisexuality, and I suspect that I mangled a good number of things that could have worked out so much better if I'd know that liking both boys and girls was an option.