The longtime pals sparked romance rumours when they were spotted getting cosy during a group dinner in New York City on Friday (10Sep10) - but her representative has brushed off the claims.
Her rep tells UsMagazine.com, "She's friends with his manager and has known Chace for a while. The dinner was with a bunch of people, and it was simply a friendly dinner. I can say with 100 per cent certainty they are not dating.”
Bilson called off her engagement to actor Hayden Christensen earlier this summer (10). She has also been linked to Jake Gyllenhaal since the split.