Reese Witherspoon and Ryan Phillippe had a storybook romance after being introduced on her 21st birthday party. They quickly got married and started their cute family. While making the rounds for her Academy Award-winning role in "Walk the Line," though, it became clear there were problems. Within weeks it was revealed Ryan cheated on his wife with his "Stop-Loss" co-star Abbie Cornish. There were also rampant rumors that he was jealous of her successful career. But Reese didn't let his philandering ways get her down for long.