While making a guest appearance on Jimmy Kimmel Live, Jessica Simpson revealed that she shared a (very) brief romance with Justin Timberlake after her 2006 divorce from Nick Lachey.Apparently, she soon found out that their short-lived fling was influenced by a bet that Timberlake made with his former Mickey Mouse Club castmate Ryan Gosling.Today in Men Ain't Shit, we discover that Justin Timberlake and Ryan Gosling made a bet when they were 12 years old to see who could kiss a certain girl