Metti, una sera a cena

Metti, una sera a cena aka One Night at Dinner and Love Circle is a 1969 Italian drama film directed by Giuseppe Patroni Griffi. It was entered into the 1969 Cannes Film Festival.

As a diversion, Max suggests to Nina that they add a third player to their bedroom games Ric Lino Capolicchio, Maxs anarchistpoet boyfriend who lives in a dankly luxurious basement and sells himself to both men and women. After a while, Ric finds himself falling in love with Nina and eventually attempts suicide over her. Nina discovers Ric in time to save him and decides to leave Michele to live with Ric. But soon their relationship withers and Nina returns to her husband. Its then that Michele decides to invite Ric into the circle, as they go on meeting at dinner and playing their games of love and seduction.

Source: Wikipedia