I would imagine that the problems in the marriage didn't arise overnight, and you can't expect changes in a positive direction overnight either. You are doing well if you are keeping your responses short and brief - just vent on here.
Something someone once told me that has helped me sort of understand the WAS - imagine you are hungry, starving even... All you can think about is getting something to eat, even eating a gross fast food meal can taste like heaven.
This is often the obsession and focus that a WAS has - the "starving" desire to change, and almost nothing else is going to matter to them until they get what they want. So, wondering, hoping, thinking, trying to figure them out - all pretty much pointless.
Keep focusing on you feeling better. Keep working out, seeing friends. Those "feel better" moments will come more often and last longer.
