It's, so we're taking some time to appreciate figures in history who are celebrated as icons of bisexuality.
For many of these people, it was extremely difficult or even impossible to come out about their sexuality, and many engaged in same-sex relationships in secret, their sexuality only becoming topic of discussion years later.
So, some of these people never self-identified as a bisexual person, but many also lived in generations where the modern-day definition of 'bisexual' didn't even exist.
Regardless, these people helped pave the way for later generations, and have assisted young bisexual people in gaining knowledge and having historical context to their sexuality on a daily basis.
1. Virginia Woolf
Virginia Woolf - portrait of the English novelist and essayist. 25 January 1882 - 28 March 1941. Source: Culture Club/Getty Images
Virginia and Vita soon after meeting at a dinner party - their husbands both knew of the affair, and did not object to it.
Woolf's hugely influential novel Orlando is based on their relationship, and Vita's son Nigel Nicholson has as "the longest and most charming love letter in literature".
2. Giacomo Casanova
Portrait of Casanova Source: Bettmann / Getty Images
Biographer Ian Kelly was able to corroborate two references from Casanova's memoir, The History of My Life, which Casanova had same-sex relations:
"The modern concept of bisexuality, no less than of homosexuality, didn't really exist in the 18th century, and the conception of sexual preference was on the whole a much more fluid affair. It seems likely that Casanova was a man who in sex, as in life, wanted to taste all the flavours on offer."
3. Lou Reed
CIRCA 1970: Photo of Lou Reed. Source: Michael Ochs Archives/Getty Images
There's about Reed's relationships through the '60s and '70s, with people of a range of gender identities - true or not, Reed remains an icon of bisexuality and sexual fluidity for younger generations.
4. Walt Whitman
CIRCA 1754: Walt Whitman (1819-1891) American poet. Source: Universal History Archive/Getty Images)
He spoke publicly of relationships with women, but also had. His poetry anthology Leaves of Grass is Whitman's memory of laying in the grass with an unnamed male lover.
5. Josephine Baker
Studio portrait between 1925 and 1932 of the American music-hall artist Josephine BAKER in which she is seated on a tiger skin. Source: Keystone-France/Gamma-Keystone via Getty Images
Baker is and had many other same-sex affairs, all the while marrying four different men throughout her life.
6. Oscar Wilde
1882: Irish poet and playwright Oscar Wilde (1854 - 1900) Source: Hulton Archive/Getty Images
Wilde's grandson and biographer, Merlin Holland, that Wilde was heterosexual "up to a certain point in his life", and also spoken about his grandfather's long-term, yet tumultuous, with poet Lord Alfred Douglas.
7. Greta Garbo
1927: New York: Greta Garbo and John Gilbert in love scene from movie named Flesh and the Devil. Source: Bettmann / Getty Images
Since Garbo's death, the estate of fellow Swedish-born actress Mimi Pollak between the pair, one of which (dated 1930) shows that Garbo wrote to Mimi after finding out she was pregnant, "We cannot help our nature, as God has created it. But I have always thought you and I belonged together".
It's also rumoured that Garbo, early in her career, also .
8. Malcolm X
1963: American civil rights leader Malcolm X (1925 - 1965) at an outdoor rally, probably in New York City. Source: Bob Parent/Hulton Archive/Getty Images
The political leader's sexuality was never a part of his public narrative, until the acclaimed biography by Bruce Perry was published. The book includes interviews with people from Malcolm's childhood friends, to people closest to him during his adult life - and several of them state that the icon was not heterosexual, as the history books dictate.
9. Anaïs Nin
Anais Nin, Portrait. Source: Annette Lederer/ullstein bild via Getty Images
Known as one of the all-time best and boldest voices in literary erotica, the esteemed author documented her own sexual relationships and , particularly Henry and June: From the Unexpurgated Diary of Anais Nin.
10. Sir Alec Guinness
Anthony Daniels, Sir Alec Guinness and Mark Hamill on the set of Star Wars: Episode IV - A New Hope. Source: Sunset Boulevard/Corbis via Getty Images
The actor was married to a woman, but was reported to have a number of male partners - and was even allegedly in a public toilet in the 40s. His long-time friend, Sir Ian McKellan (who is openly gay), alluded to Guinness' sexuality in , saying the late actor had told him not to become an activist for LGBTQIA+ issues.
"Alec Guinness took me out to lunch and said, “You really should not, as a leading actor, have anything to do with anything political, especially anything as dirty as homosexuality. I beg you not to do it”," McKellan told the crowd. "That was self-hatred."
Despite Guinness' personal battles with his sexuality, he has long been a bisexual icon. He was a Jedi, after all.
11. Billie Holiday
1939 - Billie Holiday poses for a studio portrait in the United States. Source: Gilles Petard/Redferns/Getty Images
It's long been rumoured that she had relationships with a number of stage and film actresses, including Tallulah Bankhead, Louise Crane, and Greta Garbo. She also married three different men throughout her life.
12. Alfred Kinsey
Alfred Kinsey on the cover of TIME Magazine, 1953. Source: BORIS ARTZYBASHEFF / TIME
He had same-sex relationships with graduate students and colleagues, and it's also noted that he and his wife Clara McMillen were polygamous.
13. Eleanor Roosevelt
1933 - Portrait of Eleanor Roosevelt seated in a chair, wearing a feathered hat. Source: Bettmann / Getty Images
The pair wrote lengthy, heartfelt letters to one another almost daily, which : "I want to put my arms around you and kiss you at the corner of your mouth," and, "I can't kiss you, so I kiss your 'picture' good night and good morning!".
While there has long been debate over whether Hickok and Roosevelt's relationship was of a sexual nature, Roosevelt has remained a significant figure in bisexual history.
