Actress Renee Zellweger has played down reports she is romantically involved with music legend Sir Paul McCartney. The Beatle, 65, was spotted partying with the Bridget Jones's Diary star, 38, at a Tom Petty and the Heartbreakers gig in New York on Saturday (25Aug07). But friends of the actress insist the pair are "just good friends". A source tells the New York Daily News, "I don't believe there's anything between them. "He was sitting with (U.S. comedienne) Amy Poehler and her husband, and she (Renee) was with two friends and left 15 minutes after he did."