I don't know who said that, but it's kind of true. You know, you think about them all the time, want to know all about their past, their opinions on everything, etc. Have you ever had this experience? I've 'fallen in love' with Iris Murdoch's writings lately. I'd never read her before, but now I want to go through everything she wrote.
I've had this happen a few times. When I was young, I loved Aldous Huxley and read everything I could find (without understanding half of it, of course). Also had it with Oscar Wilde, Virginia Woolf and Evelyn Waugh. I think I might have a bit of an obsessive personality. I get like this about other things as well – food, for example (I'll discover a new sandwich or type of chocolate and then keep going on and on about how delicious it is until someone tells me to shut up).