The 15 Year Old Girl
La Fille de 15 ans (original)
Willy, a middle-aged divorcee, decides to take his 15 year-old son, Thomas, on holiday to Ibiza, staying at an isolated villa on the unspoilt part of the coast. Thomas insists on bringing his friend Juliette, a girl of his own age with whom he enjoys a close platonic relationship. When it comes to physical love, Juliette is wise beyond her years. She will only sleep with men older than herself and has no intention of committing herself to a long-term relationship.
Starring Judith Godrèche, Melvil Poupaud, Jacques Doillon, Tina Sportolaro
It's a drama and romance movie, and has a rating of 6 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from United States.