Credit: Splash News Photo: Jennifer Lopez Boards Yacht in Miami on December 30, 2011

Jennifer Lopez’s hot backup dancer boyfriend doesn’t seem to be just a fling; the American Idol judge and pop star is steadily making Casper Smart a mainstay in her whirlwind celebrity lifestyle. First, J.Lo brought Casper with her to Hawaii for Thanksgiving with her family, then he accompanied her to Morocco and South America. Now, People reports the lovebirds spent New Year’s Eve weekend together in Miami with Jennifer’s twins, Max and Emme (whose father is J.Lo’s ex, Marc Anthony).

According to sources, the couple left the kids at home Thursday for a steamy night out on the town. Their first stop was for dinner at Soho House, where a source tells New York Daily News, Jennifer was “decked out” while Casper looked like “a member of the wait staff” in a white button-down shirt and black pants. Throughout dinner, J.Lo and Casper sat super close and looked very “lovey dovey.”

Then, J.Lo and Casper left Soho House to get “On the Floor” at club Amnesia. “They were very sexy with each other, dancing and bouncing around and making out," a source spills, adding, "Jennifer looked very happy. Although she kept to herself, there was no question she was really enjoying the club and her boyfriend."

Sources: People, New York Daily News

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