Kristen Stewart reportedly cheated on Robert Pattinson

Actress Kristen Stewart has reportedly cheated on her boyfriend of three years, actor and star of the Twilight Saga Robert Pattinson.

Us Weekly announced that it is getting ready to publish pictures of Stewart,22, and director Rupert Sanders, 41, engaging in a marathon makeout session. According to NY Daily News, Sanders, director of 'Snow White and The Huntsman', is married and has kids too. According to People Magazine, a source says that Stewart is pretty devastated and that the whole thing was just a mistake, and bad judgement was used. The source also said that the hookup between the actress and director occurred recently. According to Hollywood Life, the incident took place on July 17 in Los Angeles. Photographers reportedly saw the pair making out, and one photographer even said that the two looked as if they just could not get enough of each other. Rupert has a wife, Liberty Ross, who is a British Vogue model. The director also has two kids with her, ages 5 and 7.