It looks like Justin Bieber is back together with old flame Jacque Rae Pyles.

The pop sensation and his ex-girlfriend jetted off to Las Vegas on Saturday for the hottest ticket in town: the Floyd Mayweather and Canelo Alvarez match at the MGM Grand. The couple, who dated back in 2009 before Bieber's tryst with Selena Gomez, was spotted boarding a private plane together.

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Even though the Biebs made a spectacle during the fight, his lady love kept it low-key. Bieber and Lil Wayne escorted the undefeated Mayweather into the ring. Now, that's an entourage! Not to mention a step up from Lil Twist and Lil Za.

While Weezy went shirtless to hype up the star-studded crowd, which included Bar Refaeli, Magic Johnson, Jack Nicholson, Heidi Klum, Owen Wilson, and Denzel Washington, Justin kept his clothes on, for once. The pop star must be a good luck charm of sorts for Mayweather, who won his match last night. The boxer also beat Miguel Cotto last year during another fight that Bieber attended.