my W said today that we get along in a superficial level I know I have to let her go .....we never used to be getting along JUST on a superficial level this is something that she has chosen .... Can this change again.
The answer is yes, anything is possible. HOWEVER, as long as you only NEED that possibility its likely what will happen. You might R, you might D. Accept the possibility of either happening and move forward with your life not needing either to be you. Being without her wont be the worst thing that ever happens to you. What your doing to yourself right now is and that's on you.
Let me ask you this, what led up to her saying you two get along in a superficial way. What did you say right before that, what did you say after it. It sounds to me like you're still trying to initiate conversations and reason with her and need to STFU.
Accept what is, let go of what was, and have faith in what will be