A day after US Weekly obtained photos of Kristen Stewart's "steamy rendezvous" with married director Rupert Sanders, the 22-year-old "Twilight" star has released a statement publicly apologizing to boyfriend Robert Pattinson for what she called a "momentary indiscretion."
Soon after, 41-year-old Sanders, who directed Stewart in "Snow White and the Huntsman," also issued a statement apologizing to his wife, model Liberty Ross, and the couple's two young children.
The blogosphere -- and "Twilight" fans everywhere -- may be shocked by the affair, but Stewart and Sanders are hardly the first pair to cheat after meeting on the set of a movie. Click through the slideshow below for six of Hollywood's most shocking on-set affairs.
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