Rupert Sanders, the director of "Snow White and the Huntsman" and Kristen Stewart allegedly had an affair on July 17.
Us Weekly claims to have the photographs to prove it and while it plans to make them public until Friday, the magazine unveiled one of the pictures Tuesday with a man -allegedly Sanders- wrapping Stewart in his arms.
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Sanders directed Stewart in "Snow White," his debut blockbuster which also starred his wife Liberty Ross as Stewart's on-screen mother.
But it remains unclear how long or how far the affair went. A source told People Magazine that Stewart and Rupert just had "a fleeting moment."
"She wasn't having an affair with Rupert. It was just a fleeting moment that shouldn't have happened," the source told People. "She never meant to hurt anyone. She's a good person who just made a bad choice."
Stewart, 22 is reportedly feeling terrible and Sanders has not issued any comment.
"Kristen is absolutely devastated," a source told People. "It was a mistake and a complete lapse in judgment."
Sanders, 41 has two children with his actress, supermodel wife of ten years.
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