Ryan Phillippe blames getting hitched at young age for his 2007 divorce from ex-wife Reese Witherspoon.Phillippe and Witherspoon, 38, went their separate ways after eight years of marriage amid rumours that the actor had cheated with Australian actress Abby Cornish.He opened about the split during a recent appearance on Larry King Now. The Secrets and Lies actor kept details of their unravelling marriage close to the vest, but did pinpoint one reason it did not work out.“I think more of the problem was age. When we got together we were so young,” Phillippe, 40, who met the Wild actress on her 21st birthday, said. After a two-year romance with Jake Gyllenhaal, Witherspoon married CAA agent Jim Toth in March 2011. They welcomed two-year-old son Tennessee, the following year.