“One day you meet the Doctor. And of course, it’s the best day ever. It’s just the best day of your life. Because…because, he’s brilliant, and he’s funny, and mad, and best of all…really needs you. The trick is – don’t fall in love. I do that trick quite a lot, sometimes twice a day. And once you start running, you start to forget; slowly, after a while, you just stopping asking.”