When: September 2010 - March 2011

Following his split from Demi Lovato in May 2010, Joe stepped it up with his first big-boy girlfriend: Ashley Greene. Ashley was a model and actress lusted after by many thanks to two Twilight films and a Sports Illustrated Swimsuit Issue body-painting feature, while Demi was simply a Disney darling.

Smash probability:  When Joe and Ashley came out as a couple, every tabloid report noted that Joe's famous purity ring was gone. Enough said.