Panettiere 'splits from co-star Ventimiglia'

Hayden Panettiere has reportedly split from her Heroes co-star Milo Ventimiglia.

According to Us Weekly, the actors decided to part ways because of their clashing styles of living.

"It was a lifestyle conflict," said an unnamed source. "They were in very different places.

"They're still on friendly terms. There are no hard feelings."

Ventimiglia, who plays Peter Petrelli, confirmed that he was dating Panettiere (Claire Bennet) during an appearance on BBC Radio 1's The Chris Moyles Show in April 2008.

"[Hayden] is young. She likes to go out in the Hollywood scene and that's not his style," added the insider, who said that Ventimiglia had been busy "concentrating on work" at his production company Divide Pictures.

Representatives for the couple have yet to comment.