Transformers star Josh Duhamel has cheated on his gorgeous new wife Fergie – secretly having a wild fling with a buxom, blonde stripper, an ENQUIRER investigation has uncovered.

In a blockbuster exclusive interview, the red-hot exotic dancer provided all the details of her marathon sex session with the handsome actor she said is "the best lover" she ever had.

Josh tied the knot with the 34-year-old Black Eyed Peas singer this past January.

But stripper Nicole Forrester – who passed a lie detector test and whose story was confirmed by independent sources – told The ENQUIRER that marriage to super sexy Fergie didn’t stop the actor from hooking up with her.

Josh, 36, first met the dancer in early October at Atlanta’s totally nude club Tattletales Lounge, where she performs under the name "Delilah." The actor was in Georgia filming the romantic comedy Life As We Know It.

Days after they met, Josh, who starred on NBC’s "Las Vegas" for five years, invited the blue-eyed beauty back to his $820-a-night hotel room at the St. Regis hotel – touching off an X-rated tryst that lasted until morning.

The divorced mother of two told The ENQUIRER hat Josh initially identified himself as "JD" at the club, and said he was in town making a porn movie.

"I told him, ‘You are gorgeous’ and he said, ‘You’re hot, too.’"

For the full story with all the steamy details of the stripper and Transformers cheater – pick up the new ENQUIRER on sale now! SEE PIX HERE