We tend to go through phases. I used to think that I would have the one best friend (aside from my husband) and we would be best friends forever and ever
. I have soon realised that people are often coming and going in our lives. We have our old faithful friends which funnily enough we don't see that often anymore, but we are now mixing with a lot of school parents and I'm finding that lots of fun, but have also realised that yes if our kids changed schools, would we really still keep in touch.
I have also lost contact with a lot of people I used to work with and see day in day out at work, but life changes and we do move on from people.