My Sister is my Lover

I'm Peter 57 widower and have 5 grown children, who have all left home. My Sister Debbie 54 is divorced and came to live with last year after her divorce, she has 3 grown children who have moved away and married. Her family home was sold as part of the the divorce and she moved in with me, till she could find something suitable. Debbie is a great housekeeper and soon she had my place spotless. I live a large house and work from home and had been letting the place go a bit. Debbie cleaned it from top to bottom in a matter of a few days. She also a great cook and I had been living on take out. She looks 30 great for her age, I don't know why Russell divorced her. But he has started up with 24 year old, since the divorce. I've got a pool in the backyard, which had been neglected since Alison past away 3 years ago. Debbie got it cleaned out and back to usable condition. She would sunbath in the afternoon sun near the pool, sometimes topless and I had a birds eye view from my home office which overlooked the pool. Five months after she moved in I had an important business convention & meeting in the state capital. As there was dinner involved I asked Debbie to come along as my partner for the dinner. Debbie had changed her name back to her maiden name after the divorce, so on arrival we discovered that we booked in as married and there was no other rooms available. Debbie said Don't worry it alright, we can share a room for a couple of nights. On arriving at the room, we discovered it only had a Queen size bed in it. Debbie just laughed and said Don't worry I don't bite or kick when I am sleeping. She went shopping while was at the convention and we attended the dinner and had a great time together that night. Next day I had meetings with my clients and others at the convention. After I had a private dinner with Debbie and we then went and seen a show at a theatre. We came back to hotel and went to the bar and a couple of drinks and then to bed. Debbie was in the the bathroom changing and I needed to go to the toilet. I asked her to hurry up a bit and she said Don't be silly just come in and go already. So I did and she said I don't know why your so shy, your just as big on the slack as Russell was when hard. I said Thanks I think, then she asked If I have had any sex since Alison passed away. No I replied, well she said I could use a good fucking myself and I would rather you did it. Then me finding some stranger to do me, don't worry I'm past having babies. I was shocked, but my cock got very hard by itself. She added Your cock wants to and so do I, so your out voted. With that she undress and walked over to me and said let have a shower together. So we did and she went down on me and me on her. After the shower we dried each other off and then went to bed together. We had great sex twice and would have done again, but had to catch a plane back home. On returning home, I asked If we could do it again and she said I willing anytime you want. So she moved into my room and we sleep together most nights, except when we have family visiting.