The Flirtation (1904), by Eugene de Blaas
Kinsey scale of sexual responses, indicating degrees of sexual orientation. The original scale included a designation of "X", indicating a lack of sexual behavior.
Some members of the asexual community opt to wear a black ring on the middle finger of their right hand as a form of identification.
The asexual pride flag
Asexuals marching in a pride parade in London
Sir Arthur Conan Doyle intentionally portrayed his character Sherlock Holmes as what would today be classified as asexual.

Asexuality is the lack of sexual attraction to others, or low or absent interest in or desire for sexual activity.

- Asexuality

Asexuality refers to those who do not experience sexual attraction for either sex, though they may have romantic attraction (homoromantic, biromantic or heteroromantic) or a non-directed libido.

- Sexual attraction
The Flirtation (1904), by Eugene de Blaas

2 related topics

Alpha

Ladyboys in Thailand

Sexual orientation

Ladyboys in Thailand
Gay Pride, Paris 2009

Sexual orientation is an enduring pattern of romantic or sexual attraction (or a combination of these) to persons of the opposite sex or gender, the same sex or gender, or to both sexes or more than one gender.

These attractions are generally subsumed under heterosexuality, homosexuality, and bisexuality, while asexuality (the lack of sexual attraction to others) is sometimes identified as the fourth category.

Zephyrus and Hyacinthus
Attic red-figure cup from Tarquinia, 480 BC (Boston Museum of Fine Arts)

Homosexuality

Zephyrus and Hyacinthus
Attic red-figure cup from Tarquinia, 480 BC (Boston Museum of Fine Arts)
Burning of two homosexuals (the knight Richard von Hohenburg and his squire Anton Mätzler) at the stake outside Zürich, 1482 (from the Spiezer Schilling chronicle)
Dance to the Berdache
Sac and Fox Nation ceremonial dance to celebrate the two-spirit person. George Catlin (1796–1872); Smithsonian Institution, Washington, D.C.
A woman spying on a pair of male lovers. China, Qing Dynasty.
Female youths are depicted surrounding Sappho in this painting of Lafond "Sappho sings for Homer", 1824.
Sappho reading to her companions on an Attic vase of c. 435 BC
Photograph of the Finnish artist Touko Laaksonen (1920–1991) alias Tom of Finland, well known for his stylized highly masculinized homoerotic art, playing the piano in late 1950s. In the background, his partner Veli Mäkinen (left) and his sister Kaija (right).
An illustration from the 19th-century book Sawaqub al-Manaquib depicting homosexual anal sex with a wine boy
Shah Abbas I of Persia with a boy. By Muhammad Qasim (1627).
U.S. President Barack Obama signs into law the Don't Ask, Don't Tell Repeal Act of 2010
LGBT activists at Cologne Pride in 2015 carrying a banner with the flags of 70 countries where homosexuality is illegal
Protests in New York City against Uganda's Anti-Homosexuality Bill.
Roy and Silo, two New York Central Park Zoo male chinstrap penguins similar to those pictured, became internationally known when they coupled and later were given an egg that needed hatching and care, which they successfully provided.

Homosexuality is romantic attraction, sexual attraction, or sexual behavior between members of the same sex or gender.

In both the Male and Female volumes of the Kinsey Reports, an additional grade, listed as "X", has been interpreted by scholars to indicate asexuality.