Sandra Bullock was deeply in love with her husband, Jesse James. And when the actress won the most important award of her life, she thanked him very emotionally. But what she didn't know was that while she was crying…Jesse was being unfaithful to her. Jesse had been seeing a famous actress for a long time behind Sandra's back, and when the truth came out, their relationship exploded. | Celebrities

Sandra Bullock as Leigh Anne Tuohy in 2009's 'The Blind Side.' Bullock's performance earned her the Best Actress Oscar at the 82nd Academy Awards. Sandra Bullock also received a Best Actress nomination for her performance as Ryan Stone in 2013's 'Gravity.' | The Academy