One is 86 & other is 84. Husband is Alzheimer patient & Wife is Heart patient.They are my In laws.Their bonding always amazed me.My Father in law was an eminent painter,now he has completely lost his memory.He can't recognise anyone of our family,except his paintings hanging on the wall. He is totally dependent on my Mom in law.In spite of her own health condition she always takes care of him with huge patience like her kid.For me it's a great experience to witness such relationship.