Demi Lovato Makes Fans' Lives, Surprises Them With Joe Jonas Duet (WATCH)
The former couple and now good friends flashed back to their Camp Rock days, and busted out "This Is Me" for her fans. It was pretty much everything, even Joe thought so.
Joe's not the only brother Demi's working with right now, either. She's reportedly recording music with his bro Nick Jonas, too.
Watch Joe and Demi's epic performance below.