Farewell, Halo: Hayden Panettiere, Milo Ventimiglia Split

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Sad dating news to report this morning: Heroes co-stars Hayden Panettiere and Milo Ventimiglia have called off their relationship, according to reports.

"It was a lifestyle conflict," a source close to the couple tells Us Weekly, adding that the split happened within the last week.

Hayden Coughs

"[Hayden and Milo] were in very different places in their lives. They are still on friendly terms. There are no hard feelings."

The source tells Us that Hayden Panettiere, 19, "is young. She likes to go out in the Hollywood scene and that's not his style."

THG NOTE: What exactly does this supposed source mean by "go out" exactly? Despite what you see on Gossip Girl, teenagers can't drink freely in clubs - even though bribes do go along way. Just saying. And does Hayden even party that much?

As for Milo Ventimiglia, 31, he "has been concentrating on work on his production company [Divide Pictures]," the source adds.

The two, who began dating in late 2007 or early 2008, had been an open secret as a couple for months – in part because of their 12-year age gap.

This is too bad, but we totally saw it coming. Kind of makes us think that the recent report of Hayden mauling Jesse McCartney was probably true.

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Hayden Panettiere Biography

Hayden: InStyle UK Photo
Hayden Panettiere is a pretty and talented young star. You might know her from Heroes, though she has also starred in more than a dozen... More »
Born
Birthplace
Palisades, New York
Full Name
Hayden Leslie Panettiere