Divorce in anger

My question is about divorce. Me and my wife had a fight about 8 months ago and she was continuously asking for divorce at that very moment. We were both very angry. I told her ok I give you divorce and included both my and her name when I said it. Then she asked me to move out. I moved out of the house next day and have lived away from her ever since. During the last 8 months we have spoken so many times and we have been wanting to get back together. But we had fights also over the last 8 months. So my question is when I told her that I divorce you but moved out of the house next day and didn't spend 3 months with her under the same roof, is the divorce valid or not? Also when I said it we were both in anger and fighting.