Paul McCartney Steps Out with Rosanna Arquette
11/26/2007 AT 03:10 PM EST
In photographs printed Sunday in Britain's News of the World, they are seen strolling side-by-side through the grounds of the Kenwood House, a historic Hampstead home on Nov. 19. (The paper also quotes unnamed witnesses, who claim the two were kissing.)
A rep for McCartney, 65, had "no comment" on the outing. Arquette's rep did not immediately return calls for comment.
But it's not the first sighting of the pair. At the Aug. 11 James Taylor concert at East Hampton's Ross School in New York, Arquette, 48, was spotted leaning on McCartney's shoulder during "How Sweet It Is (to be Loved by You)."
Earlier this month, McCartney was photographed kissing American business woman Nancy Shevell, but a source told PEOPLE they were "just friends."