Ariana Grande and Big Sean are back to making beautiful music together courtesy of "Best Mistake." Grande tapped her frequent collaborator for a mid-tempo breakup ballad that really only adds to rumors that they're dating.

The pair take separate stabs at heartbreak over the piano-ridden single produced by Key Wane. At the opening, Grande sings, "How soon do we forget how we felt, dealing with emotions that never left?/Playing with the hand that we were dealt in this game/Maybe I'm a sinner and you're the saint, gotta stop pretending but we ain't."

Sean plays the ex-boyfriend role in the song scenario. "I guess time's wasting, tick-tocking, lip locking," he rhymes. "How can we keep the feelings fresh, how do we Ziplock it?/Wear your heart up on your sleeve so watch for pick-pockets/I guess to go the distance we might need to pit-stop it."

This duo's musical connection could well be deeper than friendship, or maybe not. As of now, they're not responding to the rumor mill, although they Instagrammed the same photo from a night out at the beach this past weekend and both happen to be single at the moment. Sean ended his engagement to Naya Rivera in April and Grande reportedly broke up with her boyfriend following her grandfather's recent death. "You learn a lot about love, life and the people around you during a time of crisis," the singer tweeted last week. 

"Best Mistake" appears on Grande's sophomore album, My Everything, out  Aug. 25. 

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(Photos from Left: Larry Marano/Getty Images for Clear Channel, Steve Jennings/Getty Images for Free The Children)