Alexandre Jardin

Alexandre (Vincent Perez) thinks that living together is always to become rutinary and trivial, so he decides to escape the routines in a very strange way and constitute the relations upon platonic love. (Wikipedia)

Gaspard lives in Paris and has an ex-wife and a career as a well-respected novelist. However, he is thoroughly bored with his life and is also short of funds for paying alimony. He decides to go to Brittany to visit his goofy brother and renew his ongoing affair with his brother's wife. Paul is equally at loggerheads with his life as a schoolteacher and is tired of forever adoring his wife and getting a cool response from her in return. On a whim, the two men decide to change places. (Allmovie)

Hippolyte, an eccentric notary, sees his marriage to Camille as his one great success. He also believes that love doesn't last, and this flummoxes him as they approach their 15th anniversary. To test her love for him, he promotes her seduction by an anonymous stranger, behaves badly to guests, makes love clumsily, sleeps in the guest room. All this breaks her spirit, and she asks him to move. (imdb)