Aw, say it ain’t so! We think Sandra Bullock and Jesse James seem like a real down-to-earth couple, even though she just won an Oscar. But now a tattoo model is claiming that while Sandy filmed “The Blind Side” — the role she won for — she was having an affair with Jesse.

“I would never have hooked up with him if I thought he was a married man,” Michelle McGee, who is aptly enough nicknamed “Bombshell,” told In Touch magazine. “He gave me the impression they were separated.”