“For four months, it was like some kind of 19th Century romantic fever. I lost 12 pounds in weight. I felt cold all the time. I took to lying on the sofa in the day, with a blanket over me and holding a hot-water bottle against my chest. I knew then why they call it heartbroken: you can feel it in your heart. I was distracted, almost to the point of madness.” Rod Stewart, on his heartbreak after his ex-wife, Rachel Hunter, left him.