Her love don’t cost a thing? The latest issue of Star magazine begs to differ! Apparently J. Lo gives her 24-year-old boyfriend Casper Smart a $10,000 a week allowance. Ba-nanas. More details after the jump!

Wendy L.

RadarOnline:

“Jen is taking extra special care of Casper,” a source exclusively told the new issue of Star.

“She hated having to whip out her credit card every time they go to dinner. And it bummed her out that Casper had to borrow money from her to buy Christmas presents, including hers,” the insider explained.

“So Jen figured it’s easier to give Casper a weekly stipend, and she thought $10K was a nice round number.”

As RadarOnline.com previously reported, just days into the new year, JLo, 42, and Casper were seen holding hands in Miami’s upscale shopping area, Lincoln Road.

The Jenny From The Block singer’s payouts will have a big impact on Casper, who go-go dances at L.A. club Boulevard3 for a mere $250 a night.

“Casper’s a young dude who blows what little money he has on clothes and flashy jewelry,” Star’s source exclusively revealed.

Now that he’s in the money and dating a Hollywood A-lister, Smart is learning how to live like a star.

“It’s a whole new world for him. He’s never been on a private jet, stayed in luxury hotels or eaten at five-star restaurants before Jennifer.”

However, Star revealed that there is one person who is not happy about the couple’s new arrangement, Jen’s estranged hubby Marc Anthony, who she split up with last summer.

“Marc is livid that Jennifer is throwing money away on this punk!” the source revealed. “He feels she shouldn’t be spending it on Casper. The kids are one thing – but her boy toy is a whole other ball of wax!”

For the full story, pick up the new issue of Star magazine — on newsstands now.