Hayden Panettiere is defending her past age-gap romance with Milo Ventimiglia! Perezcious readers may recall that the pair met on the set of the show Heroes in 2006. They soon began dating when she was only 18 years old - and he was 30. Yep, that is a 12-year age gap! And she was still a teen! However, their relationship didn't go the distance. They broke up in 2009. Related: Hayden's Mother Isn't Gonna Be The Bigger Person Anytime Soon! Years later, Hayden is looking back at that relationship in her upcoming memoir This Is Me: A Reckoning.