While Marion and Pauline are visiting Mont Saint-Michel, Henri does sleep with someone else, seducing Louisette (Rosette), who has a job selling snacks on the beach. Sylvain is watching TV downstairs at Henri's house, while Henri is upstairs with Louisette. Seeing Marion pull into the driveway, Sylvain goes upstairs to warn Henri. Louisette hides in the bathroom, and Henri shoves Sylvain after her, closing the door on them as Marion climbs the stairs. Once Marion hears the pair in the bathroom, Henri opens the door and lets Sylvain and Louisette leave rapidly, explaining to Marion that he had caught the two in his bed making love.