Perfect Strangers.

On the evening of a total eclipse of the moon, seven close friends gather for a dinner party. One of the friends, a relationship therapist says that she is convinced that many couples would separate if they saw the messages on each other's phones. As the friends debate this contention, they agree - some of them reluctantly - to play a game. They will each place their phone on the table and they will share their messages and calls with the rest of the group.