Family Secret

I found out the family secret quite by accident, I came home from work early and found my mother Joanne in bed with her brother Ian. Ian had a heart attack or something had blacked out and was still on top of Joanne, she was distraught and I help get him off her. The ambulance took Ian to the hospital and he recovered fairly well but had to take things easier in the future. I said to Joanne looks like you won't be getting much sex if any from Ian in the future. Joanne is 38 divorced and she just glared at me, then I said if you get horny I'm available. I'm 19 and the only child, my parents divorced 4 years before and my father Ross 46 had moved aboard with his new partner Donald. I'm no stud far from it and haven't had much success with girls. So I thought if Joanne wanted sex why not with me, but she wasn't encouraging in her response to me. But a few days later I was home on a Saturday afternoon, as usual, watching TV. When Joanne came in and said to me you should be out with your friends. They are away and I can't afford to go, so as usual, I'm watching TV. Then she asked well if your bored and still willing you can fuck me as I'm very horny. I stood up straight away saying I'm willing, so we went to her bed. We started to sleep together regularly, about five weeks later Ian went into the hospital for open-heart surgery. He came thru okay, but they had found severe scaring and he wouldn't able to do much anymore or risk another heart attack. His family was all home visiting him, after a few days they were gone. I became aware that Maureen 44 Ian's wife was looking unhappy most of the time. I asked Joanne what was wrong, she replied that Maureen was getting any sex from Ian either and she was very horny. How do you know that I asked, she told me was the reply. I just looked at her and she added, Maureen knew I was being fucked by Ian and where he was when he had his heart attack. Maureen and I have also been sleeping together since after your father left us. She is bi-sexual and likes sex a lot, does she know that I'm fucking you I asked. I haven't told her yet as she has been very busy with Ian's illness but I think she knows I'm getting regular sex from someone she replied. After a while, Joanne left to see Ian and Maureen. I started to wonder if I could help out Maureen as well, but not knowing how to proceed. Then my phone rang and it was Joanne asking me would I could over to Ian's place and help clean out their back shed. I said I would right over and after I got there I said hello to Ian and then he went to sleep in his room. I then went to back shed and helped clean it out. After which Joanne told me that she and Maureen wanted to share me if I was willing. I replied always willing. That when I started fucking my aunt Maureen, I've since met Alison 18 and we're going steady. But I'm still fucking Joanne and Maureen. Ian isn't any worse, but not any better also.