Michael Douglas admits he almost left his wife for his 'Basic Instinct' co-star after affair

Michael Douglas is letting go of all his secrets in his new memoir.

According to Page Six, the 82-year-old actor disclosed in his new book, "One Helluva Ride, that he had an affair with a co-star almost 20 years his junior while filming the 1992 movie, "Basic Instinct."

While many at the time believed Douglas and his on-screen love interest, Sharon Stone, were having an affair in real life, the actor admitted in the memoir that it was actually actress Jeanne Tripplehorn with whom he was having the affair.