Mom said she did not know who she would avoid telling her about that they had fucked her son.I blushed when she told me this. My cock also reacted and...I suddenly sat there next to my mother with a raging hard on again. My mother wasn't looking at me so she had not seen that yet.My mother said she felt so bad about having sex with me and that it had felt so good. She said it was wrong on every level. She started to cry and saying that she probably had ruined my life.I got closer to her and. I ever so gently started to pull it up exposing her nice fleshy arse. To my surprise and delight her position shifted. She was lying on her back and her nightie was up round her waist, legs slightly spread. My hand went straight to her pussy, again very discretely as if I was just moving in my sleep. It was not long after me and my sister had moved on from just touching and licking. Now I was fingering her pussy and we had figured out the wonders of the clit together. I was starting to learn. .. What were we going to do for 4 hours I wondered.I was visiting Mr Watson's flat for the fourth time, the first two visits were fun and he took the lead in everything that happened, but the focus for my last two visits and our time together in the shop had been more about me pleasing him, and as I ran to his flat I was hoping he would pay me some attention today, I had began to enjoy his hands and mouth on my cock, I had made my mind up I was going to ask him to, and as I got out of the lift. Sometimes, when I think of that incident, I feel like laughing at my ignorence but it still gives me a hard on, as it was my first experience of Sex. This continued for sometime till my parents were transferred to a different city and that was the last of my didi.Now in a new city, new place new friends but still a kid, a little grown up but the past experince with didi still fresh in my mind. Days and months have gone by without any unexpected incidents. However one fine day luck smile on me.