The Bridge (Un Pont entre deux rives) 2000

Mina is a housewife whose husband has just got a construction job on a large bridge-building project. Left alone much of the time, Mina goes to the local cinema frequently. One day she meets fellow film-enthusiast Matthias and the two form an instant bond. Soon they are having an affair, and Mina's son Tommy must become an unwilling part in his mother's deception. But although Mina doesn't want to hurt her family, she feels something with Matthias that she cannot ignore.