Mel Gibson with former girlfriend Oksana Grigorieva / AFP
ACTOR Mel Gibson has vehemently denied he cheated on his pregnant girlfriend with a porn star.
But unlike his love rat counterparts, Gibson has emphatically denied reports he had an affair with Polish porn star Violet Kowal.
Kowal, has told the National Enquirer that she had sex while Gibson's ex-partner, Oksana Grigorieva, was pregnant with their daughter Lucia, now five months old.
"Mel's break-up with Oksana doesn't surprise me at all," Kowal said.
"Clearly, Mel can't commit to just one woman."
Kowal alleged she had steamy sex with Gibson eight times at his compound in Malibu and at his Icon Entertainment office in Santa Monica last year.
"Mel's great in bed. It was the best sex I've ever had," she said.
Kowal also took a polygraph test, with the results showing she was telling the truth, but Gibson's rep called the story an "absurd fabrication."
The star split with Russian singer Grigorieva, 39, last month.
She later stated at a press conference in Russia that the truth behind their sudden break-up would soon be revealed.