Last week, tattoo model Michelle `Bombshell` McGee told an American magazine she had an 11-month affair with Jesse James, which included five weeks of sex. She claimed the relationship started while Sandra was away from home shooing The Blind Side - the movie she recently won a best actress Oscar for. Sandra is said to have moved out of the California home she shares with Jesse, and also cancelled several appearances at European premieres of the film. Jesse issued a public apology, but insisted much of what had been reported was untrue. It has now been claimed Jesse slept with several other women during his relationship with Sandra. "This is just the first person who has gone public," a source told Us Weekly magazine. "This is not an isolated incident. When Sandra is away, he gets bored." Michelle claimed she met Jesse after asking if she could model for his American West Coast Choppers motorcycle company. She contacted him via the internet, and he replied asking her to email his personal account. She alleged the relationship became physical, and insisted Jesse led her to believe his marriage was over. Us Weekly magazine alleges Michelle is not the first woman Jesse has got in touch with in such a way. "Everybody knew at his bike shop," a source explained. Another claimed Jesse, 40, puts adverts for "hot, tattooed biker chicks with big boobs" on the internet. "He sees their photos, answers the ads and invites the girls to his office," a separate insider alleged. Jesse apparently "duped" Sandra, by acting in a totally different way when he was not with her. Sandra and Jesse met in 2004 after she arranged for her godson to look around the set of Monster Garage, a TV show Jesse hosted. They married a year later, with Sandra becoming step-mother to Jesse`s three children.