Torn Apart (2006)

Two people are caught up in an all-consuming and forbidden love in this drama. Christine is married to Mario, a successful businessman, and is the mother of two children. However, she has a lover, a man she's known long before she was married -- her brother Christophe. Both of them are aware of the dangers of their incestuous relationship, and have both attempted to stop it -- He even introduced her husband to his sister in hopes that they would hit it off and their affair would come to a end. But neither of them have the strength to put an end to their relationship, and while Mario has recently earned a promotion at work that will necessitate moving to a new city (a job she urged him to get), she hasn't had the courage to tell her brother the news.