Sanders is married to British Vogue model Liberty Ross and is father of two children.

According to media sources, Stewart and Sanders “were caught in a romantic clinch and it seemed they couldn’t get enough of it.”

The magazine even announced that a photographic evidence of the sight is set to be released.

The Actress apparently fell for the Director, when she worked with him on the film ‘Snow White and the Huntsman', released last month.

An insider told media, “Kristen is absolutely devastated. It was a mistake and a complete lapse in judgment. She wasn't having an affair with Rupert.”

“It was just a fleeting moment that shouldn't have happened. She never meant to hurt anyone. She's a good person who just made a bad choice,” the source said.

Stewart 22, and Pattinson 26, met on the Twilight set for the first time and news immediately began to surface that they were a couple. However, it is not known how long the Twilight couple have been dating since they kept their romance under wraps for quite a long time.