Significant others are expected to be faithful to each other.
Sara and her husband are having a good time drinking at cocktail party with a group of their friends.
Sara wants to have sex.
Sara suggests to her husband that they should go home because she is feeling randy.
Sara goes to the bedroom with the host of the party and has intimate relations.
Sara and her husband enjoy a fun romp in the sack with each other.
Sara is divorced by her husband when he finds out that she has cheated on him with another man.