These two met while filming "Camp Rock" for the Disney Channel together in 2007. Demi confirmed their relationship in March, after months of speculation. Then, Demi announced their breakup via Twitter just a few months later. Joe says he made the decision to call it quits, but he'll continue to "be her friend and be there for her." But people says he played with her feelings, and he only wanted her for "On-Screen" relationship.