You Cheat, I Cheat, We Cheat

Movie description: In their marriage, the one and the other Madelyn and charles are living a lie. One day things do not go exactly as planned. They end up unknowingly hiding their partners in the same room. When they hear moans coming from the other room they are shocked to discover their partners getting it on. In this revelation, that they're both into one more things but essentially the same thing, they come to a conclusion that maybe being open with it can save their marriage.