A Summer’s Tale (E. Rohmer, 1996)

Gaspard, the main character, arrives on holiday in Dinard, a small Breton seaside resort. He awaits his girlfriend, Lena, who does not arrive. Only a short while after this, he crosses paths with the waitress Margot, and they develop a strong friendship; Gaspard also has a fling with Solène, Margot’s adventure-seeking friend. Lena eventually does turn up, and by this time, Gaspard has become attached to all three women.

(Source : en.wikipedia.org)