Bill Nighy and Anna Wintour have ignited dating rumours after they were spotted enjoying a romantic meal together in Rome.MORE: Anna Wintour actually broke royal protocol when she met the QueenThe Love Actually star, 71, and the US Vogue editor-in-chief, also 71, were all smiles as they ate and drank al fresco at a restaurant in Italy on Thursday night.In pictures obtained by the Daily Mail, Bill could be seen purchasing some roses to gift Anna before they sat down to eat. WATCH: The Queen joins