Le Dernier Jour (2004)

At Christmas time, 19 year old Simon returns home to visit his dysfunctional family with Louise, a fearless girl he met during his train ride. While Simon struggles to cope with the growing distance between him and his parents, he starts to examine his feelings when Louise develop a liaison of her own with his childhood friend Mathieu. As dark family secrets are uncovered, Simon begins to understand the truth about his sexual orientation.