Locking the door as he left, my hubby headed out. I took Chas by the hand and led to him our personal little sex cave - the storeroom. Facing him and...holding both his hands, I told him much I enjoyed our time together and would miss him very much. The feeling was mutual. I wanted to do something special for him for making my pussy and ass feel as good as they did when we had sex. Kneeling down, I undid his belt and lowered his pants. His half hard cock responded quickly to my tongue licking. I was just unlocking urges that they'd always had inside them. I never made them do anything that went against their own desires; if anything, I was speeding up the process, accelerating their sexual education.It made sense; I was the same way at their age. When I graduated high school, I don't think there was a single fellow in my senior year who I hadn't gone down on, if not much much more. As a family, we're sexually charged creatures - that's just the way it is. I didn't cause it, I was. Seconds later she pulled out a business with her work number and cell number. He rubbed his fingers over the raised letters of her name as he grew and instant chub in his pants. "Give me call" was all she said before leaving out the shop and rounding the corner back to work.That was a week ago today, a week of nude texting and horny photo sharing; a week of thick black cock pics and white and wet pussy; and they both were at their boiling points. Any time Jason saw the name Camilla come up on. I was a little disappointed when she remained on her back instead of lying on her side as she usually did. In this new position her bottom was no longer available to me.After a little over half an hour, I still couldn't sleep, my cock kept twitching in my pajamas as if it was trying to remind me of the presence of my sister lying next to me. But during the night, while she was sleeping, she turned over on her side and her rump was pressing against my cock once again. By now she seemed to be.