where did the term 7 year itch come from
The seven-year itch The phrase was first used to describe an inclination to become unfaithful after seven years of marriage in the play The Seven Year Itch by George Axelrod, and gained popularity following the 1955 film adaptation starring Marilyn Monroe and Tom Ewell. In his 1913 novel The Eighth Year, Philip Gibbs attributes the concept to the British judge Sir Francis Jeune.
Week A continuous seven-day cycle that runs throughout history paying no attention whatsoever to the phases of the moon was probably first practiced in Judaism, dated to the 6th century BC at the latest.[7][8]