Sorry you are hitting a rough patch. Do you really feel you love her less b/c of the A or is it that you have lost some trust and security that is attached to the love?
I understand you feeling tired. Take a break. Everyone needs a break - that is why most employeers give vacations. You come back refreshed w/new perspectives. Taking a break doesnt mean being the old you. It just means you arent focusing on the R and the M for a while.
Your W is still there and is working too. Huge plus. Everything takes time. It took you time to get in the mess and it will take time to work your way out of it. Patience.