I don't often comment on threads, but I am a bit puzzled by the unanimous reaction to this particular one, so here goes. I suppose what strikes me is that the contributors' feeling of possessiveness for their friends. It's appears that they feel friendships have to be exclusive almost like love affairs are. This sort of over strong emotion can be damaging too, not only for the person who feels it. For instance, if a person moves to a new area and wants to meet people, attitudes of this kind would, perhaps, exclude that new person from friendship groups in a way which is unnecessary and unfair. I have seen this happen when a friend of mine was really upset that a new neighbour was 'breaking' into her social circle and being friendly with 'her' friends. I just perceived it as the poor new neighbour trying to get to know people and I was rather surprised by what I saw as my friend's rather extreme, possessive and unwelcoming reaction. In fact, I dare not have anything to do with the new neighbour for fear of offending my (not even very close) friend. Now my friend and the new neighbour are daggers drawn. What a shame!
Don't misunderstand me, I do appreciate that there are manipulative, mean and unpleasant people who try to destroy the relationships that others value. It is very difficult to detect who they might be from the off. However, I am very happy to share my friends and spread the happiness. Thus far I have not come across too many problems. Maybe I am not as close to my friends as the rest of the contributors are and maybe that's my loss.