Sandra Bullock has left the house she shares with her husband Jesse James, a source tells People magazine. On Wednesday, In Touch magazine reported James cheated on Bullock while she was filming The Blind Side. Earlier this month, the actress won her first Oscar for that role. On Monday, she she canceled an appearance at the London premiere for the film. The couple met in 2004 and were married a year later. James is the host of a Discovery Channel show, Monster Garage. In Touch magazine first reported the alleged affair James had with a tattoo model.