"He's my best friend in the world," the actress says on an episode of The Ellen DeGeneres Show airing Monday. "I love him."
Months since the former couple both filed divorce papers citing irreconcilable differences in June, Cox says, "I appreciate David more now than I ever did. I mean ... it's hard. I don't recommend divorce in general, but, you know, he is my best friend and we've both grown and changed."
After all, the split seemed amicable for Cox, 48, and Arquette, 41, who initially separated in 2010, as they sought joint legal and physical custody of their 8-year-old daughter Coco in their filings.
"I think we both appreciate each other more," she adds. "I hope he does. I do."