Bisexuality is romantic attraction, sexual attraction , or sexual behavior toward both males and females,    or to more than one sex or gender. The term bisexuality is mainly used in the context of human attraction to denote romantic or sexual feelings toward both men and women,    and the concept is one of the three main classifications of sexual orientation along with heterosexuality and homosexuality , all of which exist on 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. Scientists do not know the exact cause of sexual orientation, but they theorize that it is caused by a complex interplay of genetic , hormonal , and environmental influences ,    and do not view it as a choice. Bisexuality has been observed in various human societies  and elsewhere in the animal kingdom    throughout recorded history. The term bisexuality , however, like the terms hetero- and homosexuality , was coined in the 19th century.
Gay & Bi Men's Social and Support Programs
The invisible stereotypes of bisexual men.
This article addresses the history of bisexuality in the United States. It covers this history from , when the first English-language use of the word "bisexual", in the sense of being sexually attracted to both women and men, occurred, to the present. The first English-language use of the word "bisexual", in the sense of being sexually attracted to both women and men, was by the American neurologist Charles Gilbert Chaddock in his translation of the 7th edition of Krafft-Ebing 's seminal work Psychopathia Sexualis. Prior to this, "bisexual" was usually used to mean hermaphroditic , often in reference to plants. However, the word "bisexual" today may also encompass romantic or sexual attraction to people of any gender identity or to a person irrespective of that person's biological sex or gender , which is sometimes termed pansexuality. One notable exception was the openly bisexual poet Edna St. In the early 20th century, during the Harlem Renaissance , blues singers Ma Rainey and Bessie Smith made no secret about their relationships with both men and women  and songs like "Sissy Man Blues", "Freakish Blues" and Rainey's "Prove It on Me" spoke openly of homosexual and bisexual relationships.
You don’t have to label yourself as gay or straight, but the reasons why matter
By Zachary Zane. After three incredible dates with a straight-identified woman, she ghosted me. I felt blindsided. Everything had been going well… or so I thought. She seemed genuinely interested in me and our last date ended with an hour-long make-out session!
Sammy was in college when she finally felt able to tell people that she had feelings for both men and women. A decade ago, she came out as bisexual. In the study, by Cornell University, participants were shown different types of pornography as the dilation of their pupils — an indicator of sexual arousal — was measured. This means, according to the authors, that everyone is at least somewhere on the spectrum of bisexuality. It reported 1.