I've felt the numb also, it was more when I really came to accept that life will never be the same and regardless of what happens its going to be a long road ahead. Reconciliation or divorcing, theres going to be alot of pain ahead and healing that needs to be done. I guess it is a bit of self preserving because it all seems impossible to overcome but time(lots of time) will help us through it all.
Accept what is, let go of what was, and have faith in what will be