The "Seven Year Itch" is a popular term that refers to a phenomenon where couples experience a decline in satisfaction in their relationship around the seven-year mark. This concept suggests that after several years of marriage, individuals may feel restless or dissatisfied, leading to thoughts of infidelity or separation. The phrase gained widespread recognition from the 1955 film titled The Seven Year Itch, starring Marilyn Monroe and Tom Ewell. In the movie, the male protagonist grapples with temptation while his wife is away, highlighting the struggles of marital fidelity and desire during this critical period.