Former Swinging Sixties party girl Jane Asher prefers the quieter things in life these days including crossword puzzles and baking. The 78-year-old actress and author famously dated former Beatles singer Sir Paul McCartney, 81, at the time and they lived with Jane and her family at their Wimpole Street town house in London before they got their own house, and were engaged until the ‘Alfie’ actress caught him in bed with groupie Francie Schwartz – leading to her calling off their wedding in July 1968. These days, the mother-of-three – who has been married to Gerald Scarfe since 1981 – loves the…