Henry & June (1990)
Henry & June is a biographical drama based on the posthumously published 1986 book of the same name by Anaïs Nin. Directed by Philip Kaufman, the film explores the love triangle between Nin (Maria de Medeiros), her fellow author Henry Miller (Fred Ward), and his wife June (Uma Thurman). While traveling in Paris, Nin starts an affair with the openly bisexual June. When June is forced to return to the U.S., she gives Nin her blessing to sleep with her husband. Then, when June returns to France, an unexpected, and sometimes contentious, threesome forms.
Henry & June was controversial at the time of its release because of its racy subject matter. And even though the MPAA ultimately gave it an NC-17 rating, the film still managed to score an Oscar nomination.