Jim Carrey and a new girlfriend in Malibu, CA on September 15, 2012. Credit: RAMEY PHOTO

Does Jim Carrey have a new lady in his life?

The 50-year-old comedian was spotted frolicking on the beach in Malibu Sunday with a sexy, bikini-clad mystery woman by his side.

Carrey went shirtless and wore khaki cargo shorts for the outing with the unknown brunette bombshell, who showed off her assets in a skimpy, black-and-gold two-piece.

Despite the fact that the pair packed on the PDA during their oceanside romp, a source close to the actor tells Us Weekly the woman spotted with Carrey is "not his girlfriend."

Prior to stepping out for his weekend hangout with his new friend, Carrey had been linked to Anastasia Vitkina, an NYC-based student.

In April 2011, he called it quits with Jenny McCarthy after more than five years together.