Definitions by Ordinary Man 2

7 Year Itch 

The "7 Year Itch" comes from a 50's movie. There is a natural tendency to get bored with your romantic / sexual partner after awhile (7 years).

That dude's got the 7 year itch, he's screwing everyone but his wife.

7 Year Itch by Ordinary Man 2 March 8, 2016