Is Ariana Grande Dating Big Sean?

ABC/Kelsey McNealAriana Grande just released "Best Mistake," a new track from her upcoming album My Everything that features Big Sean.  But now word comes that the two may be collaborating personally, not just professionally.

A source tells E! Online that Ariana and the rapper, who also appears on Ariana's hit "Problem," are dating.  "They have been spending more time together and recently have been getting very close. They are both doing great," the source claims.

E! reports that the two were spotted leaving a movie together in Los Angeles, and an eyewitness claims that while in the theater, the two were kissing during the film.

Ariana previously dated Jai Brooks of the Aussie comedy group The Janoskians, but E! reports they split for good last month because she felt he wasn't "there for her" when her grandfather was dying.  Sean, meanwhile, was previously engaged to Glee star Naya Rivera, but they broke up in April.

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