happy #BiVisibilityDay bi babies, here's a thread of prominent bisexual people in history since bi erasure goes way back and we often don't get any representation in history (or mythology)

Alexander the Great and Roman emperor Hadrian both openly had wives and male lovers.
The Greek king of gods Zeus, known for being a womanizer had a male lover, Ganymede.

Virginia Woolf had a relationship with fellow author Vita-Sackville West which both their husbands knew of. The relationship inspired Woolf's novel Orlando referred to as "the longest and most charming love letter in literature" by Vita's son.

Giacomo Casanova, the Italian adventurer and author whose surname is now synonymous with "womanizer" was reportedly a bisexual man.
His memoir, the history of my life states that he's had same sex relations.

Lou Reed is often referred to as the first 'out' Rockstar. He never openly admitted to being bisexual but he's had relationships with people of a range of gender identities through the 60s and 70s.

Josephine Baker, the highest paid and most successful American entertainer working in Europe in the 1920s, who also worked as a spy during WW2. She had an affair with Frida Kahlo, and had many other same sex affairs while being married to four different men throughout her life.

Poet Oscar Wilde was married to his wife with whom he had two sons, but he also had a number of male lovers to the point where some people just state that the author was actually gay and repressing his true sexuality in his marriage without realising that bisexuality exists.

Malcolm X, the black liberation hero was largely considered heterosexual by the history books, but interviews of his close friends in his biography stated that he wasn't, and that he had same-sex relationships before marrying a woman later.

The iconic jazz singer Billie Holiday was known to be openly bisexual throughout her career. She had relationships with a number of stage and film actresses including Tallulah Bankhead, Louise Crane, and Greta Garbo.

Alfred Kinsey, one of the greatest researchers into human sexuality and the creator of the Kinsey scale was a bisexual man in a polygamous relationship with his wife, and personally placed himself right in the middle of the scale he created.

Diplomat, activist, and the longest serving first lady of the United States, Eleanor Roosevelt had a close relationship with the openly gay Associated press reporter Lorena Hitchcock. The pair used to write long, heartfelt letters to each other almost daily.

Frida Kahlo was not only an openly bisexual feminist, but also a communist who played a significant role in the Mexican Revolution.

Bisexuals were an important part of the gay rights movement in the 1960s.
Bisexual Brenda Howard played a major role in organising the first gay pride march in 1969, and Donny the Punk made the first on campus LGBT+ student group in 1966.

i don't know whether to mention anne frank here or not so here's an article you might want to check out https://www.heyalma.com/stop-calling-anne-frank-your-bisexual-icon/