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According to another regular in Casper's social circle, the 24-year-old dancer is a frequent patron of nightclubs, especially in his hometown of Los Angeles. "[He's] popular with the ladies because he goes shirtless!" adds the source.
While Lopez is enjoying the single life with Casper, she's not looking to get too serious with anyone since her split with hubby Marc Anthony. "It's just a fling," an insider close to the 'American Idol' judge tells US Weekly.
And J.Lo's own words (or lack there of) seem to echo the magazine's source. In an interview with Ryan Seacrest, Lopez shared: "Until I'm in a really serious relationship -- because of the babies -- I'm not really gonna be commenting on my personal life."