Recently, Ava Phillippe was spotted working as a hostess at a pizzeria in an affluent Hollywood suburb.
Witherspoon and Phillippe share two children, 15-year-old daughter Ava and 11-year-old son Deacon.
Phillippe and Cornish dated for nearly three years after his marriage to Witherspoon ended.
Katy Perry and Ryan Phillippe are having some fun with a recent dating rumor.
On Sunday, the 42-year-old actor posted a Twitter message denying that he and the pop star were an item.
"I trust her to make the right decisions around our children," he said simply "I hope she feels the same way." PHOTOS: See pics of Ryan and other shirtless Hollywood dads He points out that his kids don't get too invested in their parents' dating lives.
"If the kids care about mom dad, and if that's consistent and they feel protected that way, they don't they don't really care so much about who the parent is dating.