My Sister Rachel

I'm Kirk 42 widower have one grown and married daughter, my wife died in a car accident 6 years ago. I lived alone until last April when Rachel 35 my only sister came to stay with me. She had never married and hadn't any children. She came to as the oldest of the her 3 brothers. My brothers are both married and have their own families to take care of and with me being by myself, Rachel came to me having lost her job and wanting a new start. I work my own business and lived quietly and rarely go out or date. Rachel is also a quiet person by nature and hasn't tried to find a husband preferring to stay single. She told me she had even been in a lesbian relationship, but she didn't have the interest to keep it going. Shortly after she had settled in I was going camping, I do it at least once a year just for a break and the peace and quiet of nature. Rachel asked would I mind her joining me and I told she was welcome to join me. It was only going to be a week and on arriving at my preferred campsite we set up our tent. Then going for a walk and then making our dinner and sitting around the campfire. Rachel asked me how often do you masturbate, I was a little shocked by the question and asked why her interest. I get very horny myself she said and was wondering if you might want company sometimes. You want to have sex with I asked, only if your willing she replied. I must say I had gotten a little interested in the possible fucking of Rachel. But decide to make sure she was serious and some weird game on her part. Asking her why don't find a man for a relationship. Her reply was too much crap involved in doing that. Anyway I'm not after a relationship just a fuck every now and then she added. Thinking for a while I said if you really want to fuck I'm game. So we fucked that night and have been regularly fucking ever since.