Rosanna Arquette has denied that she is dating former ‘Beatles’ star Paul McCartney. The 48-year-old insists that she and McCartney are only friends despite being spotted on dates with the singer and meeting his 4-year-old daughter Beatrice. McCartney is currently going through a messy divorce battle with Beatrice’s mother Heather Mills. Mills reportedly launched a verbal attack against Arquette after hearing she met Beatrice. The former model called Arquette a “Z-lister.”