The following has been reported by US Weekly.

Sandra Bullock‘s husband Jesse James cheated on her with other women besides tattoo model Michelle McGee, multiple sources tell the new Us Weekly (on newsstands now).

“This is just the first person who has gone public,” one source tells Us Weekly. Adds another, “This is not an isolated incident. When Sandra is away, he gets bored.”

PHOTOS: Jesse James’ alleged mistress Michelle McGee

In fact, James’ infidelity has been an open secret among employees at his West Coast Choppers bike shop in Long Beach, Calif.

“Everybody knew,” one source tells Us Weekly.

And from In Touch Weekly

Michelle ‘Bombshell’ McGee collected a sizable paycheck for her tell-all interview with In Touch Weekly, Technorati.com reports.

A source close to Mcgee tells the website she was paid nearly $30,000 for her story filled with salacious details such as penis size and underwear/condom aversion. She was fully aware James was married to Sandra Bullock when the affair started (something she has denied) and hoped coming forth with her story would turn her into a “mainstream celebrity.”

The tattoo model, who has two kids to support, claims that James was still texting her racy messages earlier this week. James apologized to Sandra on Thursday, denying “the vast majority of the allegations” but claiming responsibility for his “poor judgment.”