Préférence (1998)

In this erotic French-Italian-Spanish drama, Max (Georges Corraface), having spent a decade behind bars on a murder conviction, exits the prison a free man. Mysterious museum-worker Mila (Anna Galiena) is parked at the prison gate and speaks to him from her car. Mila is married to businessman Simon (Jean-Marc Barr), who doesn't satisfy her sexually. Later, when Max descends into a basement cafe to use the rest-room, he spots Mila at a pay phone, approaches her, and they have sex amid the rest-room urinals. Max gives her his phone number, and they rendezvous at an upscale hotel. When Max begins following Mila and spying on her, he makes a startling discovery -- her husband is his own brother.