Turns out TV chef Gordon Ramsay has something cooking on the side -- and she's a hot dish. The Hell's Kitchen star has been having a seven-year affair, according to the News of the World.

Ramsay, married for 12 years to a schoolteacher, was caught leaving a high-priced London hotel after meeting up with Sarah Symonds, a Brit known for having affairs with powerful married men. She even wrote a book called Having an Affair: A Handbook for the Other Woman.

The Kitchen Nightmares host — and father of four! — allegedly began the affair in 2001 after meeting Symonds at a London nightclub. Symonds, according to the report, even appeared on Hell's Kitchen posing as a dinner guest.

Ramsey's spokesperson, Jessica Chan, told The ENQUIRER, "Gordon is not available for comment."

Sounds like a real nightmare!