I have been married 39 years. My wife and my brothers wife are in their mid 50's. My wife and I have sex once or twice a week. My brothers wife and I have sex about as often. I have taken care of my self with good health. My brother is 100 pounds overweight and drinks to much. My brother apparently quit functioning sexually about 5 years ago. I could tell by the way she presented herself around me I might could have sex with her. My brother asked to borrow some money so my wife said I could take it by their house after work. Only my sister-in-law was there. She was to be alone for the evening. I joked that she better pay us back or I would r**e her. She gave me the look and told me to come do it now. Both my wife and sister-in-law are fun in bed. They don't look 20 years younger but average for their age. It isn't mind blowing sex but fun enjoy the moment sex. I do wish I had got with her 20 years sooner when she was younger. My wife would be hurt if she ever finds out.