Ora o mai più (2003)

The plot follows the story of David, a shy physics student at the University of Pisa, whose ordinary life is completely turned upside down by his encounter with the young activist Viola (Violante Placido). After joining a student protest group, he finds himself swept up in the dynamics of the movement and the preparations for the G8 protests in Genoa.
At the 23-minute mark, Camilla Filippi and a guy enter a bedroom and begin kissing. She takes off her shirt and is left topless, then the two throw themselves onto the bed to have sex. At the 35-minute mark, Violante Placido and a young guy make out on the bed. He takes off her panties and bra. At the 82-minute mark, Violante Placido runs toward a swimming pool, taking off her panties, pursued by a guy who follows her example. Both dive into the water. When they resurface, they have sex by the pool.