There is no such thing as a homosexual, Vidal haughtily insisted, only homosexual acts -- in which he freely, and unapologetically, admitted his participation. He wasn't ashamed of such acts. But just don't try to call him "gay."
Vidal despised identity, particularly sexual identity, ironically even as he helped define it in America. Some of the obits describe him as believing everyone is bisexual, but even that seemed to be too much of an identity for him. Vidal believed more in sexual acts than in sexual orientations.