Jennifer Lopez is reportedly giving her younger boyfriend weekly cash allowances.

Star magazine reports that the sultry superstar may be giving 24-year-old back-up dancer Casper Smart as much as $10,000 every seven days.

The insider claims that Jennifer wants Casper to be financially comfortable.

"Jen is taking extra special care of Casper," a source told the magazine. "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. So Jen figured it's easier to give Casper a weekly stipend, and she thought $10K was a nice round number."

Casper's regular employment as a go-go dancer at a Los Angeles nightclub pays him $250 per night shift. He is blown away by Jennifer's lavish lifestyle.

"Casper's a young dude who blows what little money he has on clothes and flashy jewellery," the source revealed. "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."

Jennifer's estranged husband Marc Anthony, whom she separated from last summer, is not happy with the arrangement.

"Marc is livid that Jennifer is throwing money away on [Casper]," the source said. "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!"

Jennifer and Casper began dating in autumn of last year.

The pair have been spotted most recently having a sizzling time together in Miami earlier this month.

Jennifer's divorce from Marc has not yet been finalised. The pair have three-year-old twins Max and Emme together.