For the first few years, everything was great, except for my sex life. I made several purchases of 'toys' that I kept hidden in the back of my knicker...drawer under my underwear. These seemed to be enough for me for the time being...I used one or two of them a couple of times a week. One Monday morning, as I was getting the dirty clothes ready for the washing machine, I discovered a pair of my fancier sexy knickers in the bottom of the hamper, soaked with sperm. My 14 year old son Mark must be. ." he said. I didn't wait as i slapped his ass and held on and i started thrusting. My cock sliding in and out of his tight ass, feeling that ass grip on my cock so good. "Fuck.. oh my ass... fuck me..... you fucking bitch.." he said. I went ahead and spread his ass cheeks as i went ahead and grabbed his throat and started to pound him. The whole bus shaking as we fucked on the floor. My cock slipped out and i quickly slid it back in making him moan as i pounded him some more. He took my cock. I guess she hadn’t really noticed, since I was trying to behave and she was distracted with her relationship issues. The comment (mixed with a few cocktails), must have stirred her curiosity, because at some point our innocent flirting turned into some pretty heavy petting. Being who she was, some guilt set in afterwards about it. While trying to respect her boundaries, I finally convinced her that above all, our friendship would remain intact, that we were helping fill a void in each other’s. I felt the girls tense, their hands squeezing mine as we left the changing room and started walking down the short corridor towards the main office. Turning to our right, we entered the main office. In the left hand corner was a kitchen area and, at the far end, were three smaller offices, separated from the main room by glass partitions. My office was the right of the three, the middle one was the converted nursery and the left office was shared by Andrew and Peter. The main office was a big.