Ralph Fiennes has reportedly been spotted canoodling with another woman - behind his long-term partner's back.
The handsome actor, who has been with his girlfriend Francesca Annis for 10 years, was allegedly seen at a Maggie Kim rock concert getting up close and personal with actress Gina Gershon.
According to a report in America's New York Post newspaper, the pair were seen kissing in a private booth before snuggling up to each other for the rest of the night.
One onlooker said: "They made out in a booth and then cuddled the rest of the night."
Fiennes, who is currently shooting new film 'Bernard and Doris, and Gershon, who starred in 'Face/Off' opposite John Travolta, then enjoyed the rest of the concert.
At the end of the show they were not seen leaving together.