There was his teenage electroshock therapy, for one thing (it failed to cure his bisexuality—go figure).
To BE is to exist, to have actuality; a BI is a guy or girl with bisexuality.
People who are putting their face out there and declaring their bisexuality are helping demystify it.
bisexual bi·sex·u·al (bī-sěk'shōō-əl)
Relating to both sexes.
Having both male and female reproductive organs; hermaphroditic.
Relating to or having a sexual orientation to persons of either sex.
A bisexual organism; a hermaphrodite.
A bisexual person.
Sexual activity with, or sexual attraction to, members of both sexes.