Quartet
Deux (original)
Post-WWI, a handsome veteran reunites with his beautiful wife, but her alluring sister pulls him into a seductive web of deceit and infidelity.
Starring Lola Créton, Christa Théret, Bastien Bouillon, Stéphane Varupenne, Isabelle Renault, Olivier Chantreau, Rebecca Marder, Hervé Pierre
It's a drama and romance movie, and has a rating of 5.5 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Italy.