Your posting to qt is a very good one. qt, your relationship w/your wife began as a friendship that blossomed into love and marriage. When things settle down and she feels comfortable in actually warming up again towards you, maybe the two of you can become friends again and go from there. Now, this may not happen today, tomorrow or next week...but it is something to think about.
Right now, both of you are looking to co-parent w/the children and to me, that can lead to leaving the door ajar for friendship down the road.
It's one step at a time, one day at a time.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.