Dd's best friend, M, after 2 years of being inseperable, has moved on. M's mother is also my "best friend", although we'd never admit it out loud. Now that our dds are no longer close, a barrier seems to have grown up between M's mum and I. I feel unhappy about it but don't know what to do. Does anyone else have any experience of this or are M's mum and I just developmentally backward?