My Father

My father decided he wanted to be single again and left us, signed over the house and gave my mother a lump sum payment and left. That was 5 years ago, we haven't heard anything of him since. I was 17 at the time and the oldest of 3 (only boy), my mother got a job so I could still go to university. I've stayed close to home and am doing well at university, I heard her masturbating herself on a Saturday and my siblings were out at their friends' places. I had come home early and in the back way and heard her, I had a look and saw her masturbating. Being a bold person by nature, I joined her and have been fucking her ever since. I regularly join her late at night for sex or she joins me. I've a girlfriend and we have started fucking also. My mother is the icing on the cake you could say.