My younger sister and I have 9 years age difference and she's been, since she got divorced at 35, my mistress. My wife has serious health problems and sex never was good with her, we have a good life but no sex so when my sister got divorced she came to live with my wife and I for awhile, what was a great help because my wife at that time got worst and had to stay in bed and needed assistance. During the day I needed to go to work, so my sister stayed with. This was the reason we started having sex and lasted until my wife died 5 years ago. My sister went to live with her son 2000 km away, and now I only see her once in a while.