Sandra Bullock husband caught cheating?

Sandra Bullock's husband Jesse James has reportedly been having an affair with a tattoo model.

James has allegedly been cheating on the Oscar-winning actress with a woman called Michelle 'Bombshell' McGee for almost a year.

Speaking to In Touch, McGee claimed that she believed James's marriage with Bullock was over, insisting: "I would never have hooked up with him if I thought he was a married man. He gave me the impression they were separated."

McGee added that she first met James while Bullock was in Atlanta filming The Blind Side. She is said to have sent his company West Coast Choppers a message on Facebook to ask whether they had any modelling work available. She said that James later wrote back and gave her his personal email address.

"He started saying, 'Do you want to hang out?'" the model recounted. "I asked him, 'What's going on with you and Sandra?' He said, 'She doesn't live here. She has a house in Austin. She is filming, and I can't talk about it.'"

McGee went on to say that James did not wear a condom when they had sex.

Meanwhile, Bullock earlier pulled out of the London premiere of The Blind Side, citing "unforeseen circumstances".