I adopted Charlie six months ago. He was about one year old and had come from an animal hoarding situation. As I understand it, his basic needs were met but he didn't get much human socialization. I have two other cats and they all get along very well with lots of mutual grooming and play fighting. Charlie has warmed up to me a bit. Oddly, he is most affectionate when I am lying in bed: he'll come around for petting and head-scratches and purrs loudly. At all other times, he runs away if I try to pet him. Has anyone else encountered this kind of behavior? Why is bedtime the only time he is willing to be petted? Are there other things I can do to help him relax?