Wow, everyone, so many insightful comments.
Sockpuppet - my NCT group are the women (and partners) who attended 8 weeks of 3 hr ante-natal / parenting classes run by the NCT with me. We paid (a lot!) and went because we have no experience of children and we had just moved to a new area so it seemed a good way to meet people, who were also in our "impending baby" situation. After the classes finished, we used to meet virtually every Thursday and do days out and stuff. I enjoyed it but it could be draining as we were strangers to each other initially.
Hexagonal, I was interested in your comment "a friend won't do things that annoy me or won't think badly of me for what I expect from them as they will expect the same back." On my other thread, I said something stupid to a friend and I have not been in contact with her since. If you don't mind me asking, how forgiving are you? Do you give friends a few chances or is it 1 strike, you're out?
People have talked about "real" friends, friends and acquaintances...but how do you tell them apart? Is it time served or instant connection or what? If you keep pursuing a friendship with an acquaintance, will it eventually turn into a "real" friendship?
The comments about being part of a group are interesting as well - I have never thought about that before. I do like being part of an NCT group - it was good to talk to several different people at once, rather than just being 1-on-1 and it felt more like a work situation, where you're in a team. But it's interesting that I've never thought about the difference between relating to someone individually and as part of the group.