varietist

Adjective

 * 1)  Of, relating to, or practicing sexual varietism.

Noun

 * 1)  A person who is nonmonogamous.
 * 2) * 2015 March 23, David S. D'Amato, Free Love: Victoria Woohhull, Libertarianism.org
 * In her periodical, Woodhull stated that her proposition was to "advocate sexual freedom for all people - freedom for the monogamist to practice monogamy, for the varietist to be a varietist still.".