Bisexuality refers to sexual or romantic attraction toward members of both sexes. It is one of the three main classifications of sexual orientation, along with heterosexual and homosexual.
According to 's research into human sexuality in the mid-20th century, most humans do not fall exclusively into heterosexual or homosexual classifications but somewhere between. According to Kinsey's study, most persons fall within the range of 1 to 5 (a mixture of heterosexual and homosexual). Although Kinsey's methodology has come under criticism, the scale is still widely used in describing the phenomenon of bisexuality.
Bisexual people are not necessarily attracted equally to both sexes. Because bisexuality is often an ambiguous position between homosexuality and heterosexuality, those who identify, or are identified, as bisexuals form a heterogeneous group.
Bisexuality is often misunderstood as a form of adultery or polyamory, and a popular misconception is that bisexuals must always be in relationships with men and women simultaneously. Rather, individuals attracted to both males and females, like people of any other orientation, may live a variety of sexual lifestyles
