Inside the Ryan Phillippe and Reese Witherspoon Split

On October 30, a rep for Ryan Phillippe and Reese Witherspoon, 30, released a statement announcing the couple’s separation. What wasn’t mentioned: The fact that Phillippe, 32, has recently grown close to Abbie Cornish, 24, his Australian costar in the indie film Stop Loss; according to an insider, during a shoot in August, Texas, from August to late October, the two had a fling. (“It’s not true,” Cornish’s rep said. “They are costars and that is it.” Reps for Phillippe and Witherspoon had no comment.)

On October 10, local Lauren Scott witnessed Phillippe and a blonde, who fit Cornish’s description, kissing at sushi restaurant Kenichi. “I was pretty shocked that he would blatantly cheat on Reese in public,” Scott told US. Other sources say things fell apart two weeks ago, hours after Ryan’s New York premiere of "Flags of Our Fathers," when Witherspoon found incriminating e-mails on her hubby’s BlackBerry.

Witherspoon was alerted to pictures of Phillippe with Cornish, says a source. When she confronted him about the relationship, “Ryan admitted it was true and said, ‘We just need to end this.’ Reese literally had no choice.”

It’s sad to see these two split.