Sandra Bullock

Sandra Bullock and Jesse James are not living under the same roof right now. YIKES!

The actress left the Southern California house she shares with James just days before a report of infidelity by her husband, a source tells People magazine.

Bullock, 45, left on Monday, the source says. Bullock, who won her first Oscar – a Best Actress award – for The Blind Side on March 7, also abruptly canceled a trip to Europe for the London premiere of the film.

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