Tattoo model Michelle "Bombshell" McGee's exclusive with In Touch magazine reveals that she allegedly had an 11-month affair with Sandra Bullock's husband while Sandra was away filming her Oscar-winning role in The Blind Side.

Yesterday, Sandra canceled her appearance at the London premiere of The Blind Side this weekend. She also moved out of her home on Monday.

Sandra, 45, and James, 40, met in 2004. They married a year later in a sunset ceremony at a ranch north of Santa Barbara attended by 300 guests.

Other incriminating details include Jesse deleting his Twitter account! He was following his alleged mistress Michelle on Twitter and they had first met on Facebook, according to Michelle.

Breakups aren't fun and being cheated on is difficult, but that's not what bothers me the most about this story. I feel so bad that Sandra was not able to enjoy her Oscar moment. This nonsense was introduced a week after she picked up her coveted trophy. I find it truly heartbreaking that Sandra couldn't even have a solid week to enjoy such an incredible career highlight without some whore messing it up for her.

Stay strong, Sandra!