Since calling it quits in May, Joe Jonas and Demi Lovato have remained friends while on their summer tour.

In an exclusive clip from "Camp Rock 2: The Final Jam," the Jonas brother and his ex Disney starlet sing about their relationship.

You can catch the song on Disney Radio and the video on the Disney Channel Friday night, but "Extra" has it for you now!

"Camp Rock 2: The Final Jam," premieres on the Disney Channel Friday, September 3.

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