Bruce Willis and Emma Heming: 23 years
Willis, 64, married model Heming, 40, in 2009. They have two daughters: Mabel Ray, 6, and Evelyn Penn, 4.
In an interview after marrying, Willis said he fell in love with Heming after one date.
"We went on one date, on the Friday before Emma was getting ready to move back to New York, and then we fell mad crazy in love," Willis said.