I've been physically separated for about 3 months now, however before that my WAW and I lived together but separate in the same house for 12 months - a special kind of limboland. I don't recommend it at all. It took me a long time to accept the handwriting on the wall, but I have finally begun the detachment process and see a faint glimmer of light at the end of the tunnel. It's not the tunnel I was hoping to emerge from, but it's beginning to look a lot better as time goes on.
