Friends say Balthazar Getty's wife Rosetta was "blindsided" by her husband's affair with Sienna Miller, OK reports.

Friends say Balthazar Getty's wife Rosetta was "blindsided" by her husband's affair

The Brothers & Sisters star announced that he and Rosetta, 38, had separated in a statement released Monday. The announcement came after photos revealed Getty, 33 and Miller, 26, cavorting in Italy, including many of her topless.

"Balthazar and Rosetta were in no way separated when Balthazar began his relationship with Sienna Miller, and any implication otherwise is an absolute lie," says a close friend of the couple. "Balthazar's affair has been utterly devastating to Rosetta and her family."

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