DEMI MOORE has been warned by pals that she could be falling for Mr. Wrong!

The unlucky-in-love cougar, 51, has been gushing that her new romance with heavily tattooed rocker Sean Friday, 27, is the real deal – but friends are urging her to think twice.

They slam Friday as a fame-hungry gigolo who discards girlfriends like used Kleenex.

“Sean is a real love ‘em and leave ’em guy, so the idea that he’d get serious with a woman who’s almost twice his age is laughable,” said a close source.

Friends fear the skirt-chasing musician is using the still-stunning movie star to advance his own career while scoring an A-list notch on his bedpost.

Unfortunately, insecure Demi could be easy prey, say her pals.

The “Charlie’s Angels” beauty – who’s been divorced three times – has suffered a string of failed romances in recent years.

Following the collapse of her six-year marriage to Ashton Kutcher, 35, she was dumped by a succession of younger men. And now friends fear another rejection could be too much for Demi, who was in rehab as recently as 2012.

The star’s latest red-hot affair took off when her 25-year-old daugh­ter Rumer, a fan of Friday’s group Dead Sara, introduced her to the rocker.

Only a few weeks have passed since then, but the romantic duo has already vacationed together in Mexico, and Demi is said to be talking about moving Friday into her home.

“She’s a sucker for romance,” noted an insider. “But another heartbreak is the last thing she needs right now.”