Conversation so far:
Are there any other interesting aspects about this article?
In the multi-volume memoir The Diary of Anais Nin (1931-74), Anais Nin said she had a love affair with Vidal, who denied her claim in his memoir Palimpsest (1995).
Who was Anais Nin?
regarding Nin, in the online article "Gore Vidal's Secret, Unpublished Love Letter to Anais Nin" (2013), author Kim Krizan said she found an unpublished love letter from Vidal to Nin.
What else is notable about Vidal's private life?
Vidal also said that he had an intermittent romance with the actress Diana Lynn.
How did that romance fare?
Lynn, and alluded to possibly having fathered a daughter.
Are there any other interesting aspects about this article?
In 1950, Gore Vidal met Howard Austen, who became his partner for the next 53 years.
Who was Howard Austen?
He said that the secret to his long relationship with Austen was that they did not have sex with each other, .
Who else was Vidal romantically involved with at the time?
CANNOTANSWER.
What else did Vidal say about his private life?
he refused to call himself "gay" because he was not an adjective, adding "to be categorized is, simply, to be enslaved.
Watch out.
I have.

Question: How did he refer to his sexuality?
Self-contained rewrite: How did Gore Vidal refer to his sexuality?