What if your spouse is friendly and wants to do things with you "as a friend," but "the relationship as man-and-wife" is "over"?
Are you satisfied being just a friend and ready to put the idea of ever being man & wife behind you? If you are, then be her "friend". However, know up front that your idea of what kind of friendship you'll have....and her idea of friendship, will be completely mismatched. Anyone can be her friend. Only one person can be her spouse. You decide.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!