Hayden Panettiere dated her Heroes costar, Milo Ventimiglia, when she was 18 and he was 29. On May 6, the actress spoke to Us Weekly about the breakup while promoting her new memoir, This Is Me: A Reckoning. “Every relationship I’ve ever been in, I invested my whole self in,” she said. “I saw [Ventimiglia] as my partner and that it was going to hopefully keep going and evolving and lead to marriage. But it was a point of contention that I was unable to put the ‘I’ in front of ‘love you’ and at the time, I didn’t realize or understand why it made me feel so uncomfortable. I could only say ‘love you’ in a casual way. Being older, he was much more aware of what that meant. And that said a lot.” She was then asked about their breakup. Ventimiglia ended the relationship with her, took it back after she took the news so badly, then broke up with her again a week later. However, she believed that he only took her back because she was crying so hard.…