Researchers at the University of Hertfordshire asked 100 people aged between 22 and 45, who went on three-minute speed dates, the best opening lines they heard. The winning lines? ‘What is your favourite pizza topping?’ and ‘Who would you be if you were going on Stars In Your Eyes?’ These give the other person the chance to respond in a light-hearted way. The worst lines? ‘I have a PhD in computing and, ‘My best friend is a helicopter pilot.’