Yes this is true. Here is the story: According to a US magazine, Pitt was caught red-handed by Jolie massaging the back of their "pretty young nanny" in their twins' bedroom. While Pitt tried to calm the situation, the infuriated actress slapped him across his face. "Angie snapped and slapped him across the face. Brad was stunned," the Daily Star quoted a source as saying. She even flipped and tried to throw the nanny out.