In a longitudinal study about sexual identity development among lesbian, gay, and bisexual (LGB) youths, Rosario et al.
and the concept is one of the three main classifications of sexual orientation along with heterosexuality and homosexuality, which are each parts of the heterosexual–homosexual continuum.
A bisexual identity does not necessarily equate to equal sexual attraction to both sexes; commonly, people who have a distinct but not exclusive sexual preference for one sex over the other also identify themselves as bisexual.
Some individuals identify themselves as heterosexual, homosexual or bisexual without having had any sexual experience.
Rather, LGB individuals are often raised in communities that are either ignorant of or openly hostile toward homosexuality.Bisexuality as a transitional identity has also been examined.Bisexuality is romantic or sexual attraction to males and females.The American Psychological Association states that "sexual orientation falls along a continuum.
In other words, someone does not have to be exclusively homosexual or heterosexual, but can feel varying degrees of both.
Sexual orientation develops across a person's lifetime–different people realize at different points in their lives that they are heterosexual, bisexual or homosexual." Sexual attraction, behavior and identity may also be incongruent, as sexual attraction or behavior may not necessarily be consistent with identity.