Hot on the heels of The ENQUIRER’s scoop that JENNIFER LOPEZ boy toy CASPER SMART accused her of cheating with singer pal PITBULL – a charge she hasn’t denied as we go to press – comes this new revelation:

The superstar freely admits she’s got a real problem with sleeping alone!

“But it has nothing to do with sex,” reports my inside source.

“When Jennifer and her ex MARC ANTHONY were traveling all over South America taping for their 2012 TV talent show ‘Q’Viva,’ Casper often didn’t accompany her – and when he wasn’t around, she’d ask her female cousin/assistant, Tiana, to spend the night right next to her because ‘I just get so lonely in bed!’”

(How’s that for undercovers reporting, folks?)