As I get older, I have come to learn that the people that I call friends are nothing more than acquaintances. Work acquaintances. church acquaintances, childhood acquaintances, etc. I maybe have one or two close friends, even as time has went along, they have become more acquaintances than friends.
One thing I have noticed as well is that I must remember people better or thought I was closer to someone than the opposite party in the relationship thought. This has caused some friction with people, as I want to talk about the "old days" I have got into conversations, where I thought I knew the person better and they have said "you look familar, but who are you?' Maybe due to our high iqs and the fact that many of us have photographic memories, we remember names and faces better.