The 3 stars I give this are for the performances - little else is worthy of respect. The direction and cinematography are completely flat, and the script is a mixed bag.
Where the film really falls apart though is in the behaviour of the central character. We begin with a woman who has apparently spent 12 years happily married (at least the couple appear happy at the start of the film), and who remained faithful during that time, save one brief kiss with a neighbour. She begins an affair with a man she meets whilst working, and instantly becomes an entirely new character - one that feels no guilt or sympathy towards her husband, in fact who seems to actively seek to humiliate him, and who almost allows her child to fall to its death. No explanation for this U turn into an amoral narcissist is even hinted at, and the character's own explanation consists of little more than a brief burst of existentialist waffle at the end of the film. Ultimately, the character is completely unbelievable, as her actions are irreconcilable with her history.
Where the film really falls apart though is in the behaviour of the central character. We begin with a woman who has apparently spent 12 years happily married (at least the couple appear happy at the start of the film), and who remained faithful during that time, save one brief kiss with a neighbour. She begins an affair with a man she meets whilst working, and instantly becomes an entirely new character - one that feels no guilt or sympathy towards her husband, in fact who seems to actively seek to humiliate him, and who almost allows her child to fall to its death. No explanation for this U turn into an amoral narcissist is even hinted at, and the character's own explanation consists of little more than a brief burst of existentialist waffle at the end of the film. Ultimately, the character is completely unbelievable, as her actions are irreconcilable with her history.