Jennifer Lopez wasn't only holding hands with her ex, Marc Anthony, this weekend in Las Vegas.
J.Lo also had her boyfriend, Beau "Casper" Smart, by her side…
The two hit Hyde nightclub on Saturday after the ¡Q'Viva! The Chosen gig to celebrate the launch of Lopez's new single "Goin' In."
Lopez arrived at the red carpet in a golf cart. She stunned in a cream and gold dress with Christian Louboutin heels.
She and Smart hung out in a VIP area overlooking the dance floor. Then she danced with some girlfriends to her own tune "Jenny From the Block" and Nicki Minaj's "Finally Famous."
Lopez, 42, and Smart, 25, danced near each other, but I'm told they kept the PDA to a minimum.
At one point, the hot single mom of two joined DJ Mick Boogie in the DJ booth to introduce her new song.
The following night, the lovebirds took in a performance of Mystère by Cirque du Soleil at Treasure Island.
FYI: Anthony headed to Marquee on Saturday while another of Lopez's exes, Sean "Diddy" Combs, was hosting his Black & White Affair party nearby at the Paris' Chateau Gardens after jetting into the city from the Cannes Film Festival.