" I didn’t make a nuisance of myself, not until the end, anyway, and I never outstayed my welcome, not while there was still a welcome to be outstayed; but I was kind and sincere and thoughtful and devoted and I remembered things about her and I told her she was beautiful and bought her little presents that usually referred to a conversation we had had recently. None of this was an effort, of course, and none of it was done with any sense of calculation: I found it easy to remember things about her, because I didn’t think about anything else, and I really did think she was beautiful, and I would not have been able to prevent myself from buying her little presents, and I did not have to feign devotion. There was no effort involved. So when one of Charlie’s friends, a girl called Kate, said wistfully one lunchtime that she wished she could find somebody like me, I was surprised and thrilled. Thrilled because Charlie was listening, and it didn’t do me any harm, but surprised because all I had done was act out of self-interest.
And yet this was enough, it seemed, to turn me into someone desirable. Weird "

― Nick Hornby , High Fidelity