You are married?????

Well I went to see dad today in my lunch hour. He seems chirpy enough. I started to tell him about my eldest sons birthday. He asked his name , I answered. I asked him to guess how old he is...... His reply who is he? I said he is my oldest child. Have you got married??? The reply... He now thinks he lives in his childhood house, has no recollection of grandchildren, my marriage 21 years ago almost, he is going back in time I have a feeling this is just going to get worse So I will continue to visit, put more pictures on my phone .......and repeat myself .......a lot