Not a heart-wrenching film but illuminates with precision the dynamics of friendship, marriage and adultery. It shows a potent portrait of two couples whose marriages are going to break; has an enormous power and tells some uncomfortable truths. In this movie actions have consequences that are not resolved with a hug or a cry. The four grown-ups (as well as their children who are perfectly aware of the situation) are very talented and all deliver passionate and compulsive performances. The atmosphere lingering in the air is what impressed me the most, being the flick filled with very expressive glances and electrical silences. Mark Ruffalo and Naomi Watts always very gifted.