Us Weekly claims that the 22-year-old actress and her 41-year-old Snow White and the Huntsman director, Rupert Sanders, had a “marathon makeout session.”
“Kristen is absolutely devastated,” a source tells People. “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.”
Kristen was last spotted with Rob at the 2012 Teen Choice Awards. They will soon be promoting their upcoming flick, Twilight Saga: Breaking Dawn – Part 2, which hits theaters on November 16.