09/06/2008 05:12 am ET | Updated May 25, 2011

Sienna Miller At LA Hotel With Married Lover Getty

SIENNA MILLER has been secretly seeing her married lover at a hotel near his wife's home.

The actress has had liaisons with millionaire BALTHAZAR GETTY at the Chateau Marmont hotel -- less than two miles from his pad in the Hollywood Hills.

It contradicts claims the actor, 33 -- heir to a £25billion oil fortune -- has dumped Sienna and begged wife Rosetta, mother of his four kids, to take him back.

Sienna, 26, was spotted leaving the Chateau at 4pm on Tuesday. Getty's car remained inside the hotel garage.

Getty, who was previously snapped snogging the topless Brit on a yacht in Italy, has a room at the hotel while filming in LA.

He is yet to be seen visiting Rosetta, 38, or their kids.

Sources said before leaving the hotel, Sienna appeared nervous and upset -- and was arguing on her mobile.

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