Jennifer Lopez, 42, may have put on a good show for fans on Saturday at Las Vegas' Mandalay Bay Events Center when she reunited for a live performance with her ex-husband Marc Anthony, 43, for their series, Q'Viva! The Chosen — a project on which they decided to team up when they were still in the midst of wedded bliss — but Lopez only had eyes for her new "beau," backup dancer Casper Smart, 25, (whose given name is Beau) when she later danced the night away with Smart at the Bellagio's Hyde club.

Lopez made her grand entrance at the Bellagio on a scooter, according to the New York Post, before performing her new song, "Goin' In" at the DJ booth. "Jennifer and Casper were making out all night," a source told the paper.

As if that's not enough to prove that it's true love, it looks like Lopez may be working out a deal for a reality show that will star her and Smart and center around their professional relationship, reports Fox News Latino. Smart was also recently promoted to head choreographer for Lopez's impending world tour with Enrique Iglesias and Wisin y Yandel.

Lopez's tour kicks off on July 14 in Montreal, Canada. Q'Viva! The Chosen, which began airing on Univision, was recently picked up by Fox. It will show Latin American performers competing for top prize.

When it comes to Lopez's most high-profile project, American Idol, she recently hinted to talk show host Ellen Degeneres that she might not return. "I miss doing other things," Lopez told Degeneres. "It really does lock you down, which was nice the first year with the babies being three and four. Now they are going to school. I just don't know."

Watch a video of Lopez and Anthony's performance here:

For more on Jennifer Lopez and Casper Smart:

Jennifer Lopez Buys Boyfriend Casper Smart A Truck

Who Is Casper Smart, J. Lo's New Boy Toy?

Marc Anthony Smooches Model Shannon De Lima

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