Demi Lovato snatched up Disney's hottest bachelor -- she's dating Joe Jonas.

Joe Jonas & Demi Lovato
In an interview with "Access Hollywood," Demi confirmed the coupling, saying of Joe, "He's perfect ... a complete gentleman ... my best friend and he is incredible."

Demi and the Jo Bro met on the set of "Camp Rock" in 2007 ... and toured together last year.

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