The Little Hut

The Little Hut is a 1957 BritishAmerican romantic comedy film made by MGM starring Ava Gardner, Stewart Granger and David Niven. It was directed by Mark Robson, produced by Robson and F. Hugh Herbert, from a screenplay by Herbert, adapted by Nancy Mitford from the play La petite hutte by Andr Roussin.

Susan feels neglected and has been trying to make Philip jealous by demonstrating a romantic interest in Henry, who begins taking her seriously. Now that they are alone on the island, Philip constructs a large hut for his wife and himself and a little hut for Henry, but before long Henry is suggesting they share not only food and water but Susan as well.Opposed to this, Susan nevertheless is offended by Philips indifferent reaction to Henrys indecent proposal. The quarrel escalates until Philip declares that, as captain of their ship, he feels entitled not only to perform marriages but to grant divorces. He awaits Susans decision on whether the men should change huts or share and share alike. ........

Source: Wikipedia