The Wikipedia definition of Bisexuality….

Bisexuality is a sexual orientation which refers to the romantic and/or sexual attraction of individuals to others of both genders (socially) or sexes (biologically). Most bisexuals are not equally attracted to men and women and may even shift between states of finding either gender or sex exclusively attractive over the course of time.However, some bisexuals are and remain fairly static in their level of attraction throughout their adult life.

In the mid-1940s, Alfred Kinsey devised the Kinsey scale in an attempt to measure sexual orientation and activity. The 7-point scale has a rating of 0 (“exclusively heterosexual”) to 6 (“exclusively homosexual”). Bisexuals cover most of the scale’s values (1–5), which range between “predominantly heterosexual, only incidentally homosexual” (1) to “predominantly homosexual, only incidentally heterosexual” (5). In the middle of the scale (3) is “equally heterosexual and homosexual”. Although Kinsey’s methodology has come under criticism, the scale is still widely used in describing the phenomenon of bisexuality.

Although observed in a variety of forms in human societies and in the animal kingdom throughout recorded history, the term bisexuality (like the terms hetero- and homosexuality) was only coined in the 19th century.

I think on that scale I’d be a 4 – how about yourself?  I’m sure I’m going to bring up this post again.