Should Hayden and Milo's Real Life Romance Worry "Heroes" Co-stars?


Could Hayden Panettiere (ex-Lizzie, Guiding Light) and Milo Ventimiglia's on-set romance cause problems for their hit NBC series Heroes? Co-star Greg Grunberg may be worried it could. According to TV Guide's Seen & Heard column, Grunberg was overheard at an NBC party saying he had already experienced the pitfalls of a co-stars becoming romantically linked on both Felicity (Keri Russell and Scott Speedman) and Alias (Michael Vartan and Jennifer Garner), but that so far Panettiere and Ventimiglia's relationship had been "great".