Justin Bieber dating Cailin Russo? [PHOTO]: Sexy model stars in new music video 'All that Matters,' kisses Selena Gomez's ex in leather bra

On Tuesday (November 19), pop star Justin Bieber and stunning model Cailin Russo both posted this intimate snapshot on Twitter/Instagram:

But no worries, Beliebers, the sexy duo are NOT dating. Russo actually stars in Bieber's new music video for "All That Matters" -

cairusso: "Guess the cats out of the bag @justinbieber #allthatmattersmusicvideo."

justinbieber: "#allthatmattersmusicvideo."

The new music video will "be out soon."

The aspiring 19-year-old model looks absolutely stunning kissing the Biebs on the cheek and flaunting a leather bra-and-shorts ensemble. The two actually look pretty good together!

Meanwhile, the "Believe crooner" continues partying his youth away (sans ex-girlfriend Selena Gomez).

How many fans can't wait for Bieber to drop the new video for "All that Matters?"