Get Out Your Handkerchiefs

Get Out Your Handkerchiefs (French: Préparez vos mouchoirs) is a 1978 French romantic comedy film directed by Bertrand Blier. The film won the Academy Award for Best Foreign Language Film at the 51st Academy Awards.
Plot
Raoul (Gérard Depardieu) and his wife Solange (Carole Laure) are eating in a restaurant when Raoul expresses concern with Solange's apparent depression, as she eats little, suffers migraines and insomnia and also sometimes faints. He finds another man in the room, Stéphane (Patrick Dewaere), to be her lover and hopefully enliven her again. Stéphane is puzzled by Raoul's plan but gives in to his desperate appeals for help. The two men take turns sleeping with Solange, and both try to impregnate her without success, believing a lack of a child to be the source of her depression.
Raoul, Solange and Stéphane work at a boys' camp in the summer, where they meet a 13-year-old math prodigy named Christian Belœil...