I have had this problem for about two years now. For some reason, when I am talking to someone on the phone, I have to have a clear image of that person in my mind before I say goodbye. My boyfriend laughs at me sometimes because I have to call him back a few times after we hang up! I dont know why, but it scares me to think that I wasnt thinking of that person when we said goodbye. It makes me feel as if they knew I wasnt thinking about them.