After a few weeks of mainly socializing one on one, she told me one night, when we were talking about classes, that she was going on the pill. She did...'t say any more about it, but it got me thinking that she must be doing this because she wants to have sex and maybe I'm the guy she wants to have it with. At least, I hoped I was right.At the time, we weren't actually dating as such but it was quickly evolving to just that.So, after about a month of actual dating, Allison invited me back to her. She grasped her knees and opened her legs. I took my hard shaft in my hand and gradually worked the head in. When I popped in she let out a squeal and said, “Oh shit, I just didn’t really know how big it was. I can feel you stretching me." I asked her, “Do you want me to stop?” “Hell no, I want it. I want it now.” So, I slowly worked more and more inside her tight cunt. I watched as each inch went in, stretching her open, like she had never been before. When I had half of my hard member in. I was straddling her with my cock standing proud and oozing pre-cum. My mother in laws mouth was hanging open. It was an opportunity too good to miss. I knelt up and pushed my cock down until the purple head was lined up with her open mouth.I had one hand on my shaft as I pushed my hips forward and guided my glistening cockhead between those thin lips that had so often been pursed in sour disapproval of something I'd said or done. I could feel her toothless gums against the sensitive underside. Just one more problem to dealwith!After about four weeks, Sister Sarah would leave me after I wasimprisoned in my day corset and shoes with the instruction that I was todo my make-up and then practice my walking and sitting and generalmovement with the promise that she might turn up at any time to check onme. Of course, I didn't know when or if she would actually arrive so Ihad little option but to continue with my training, whether or not shewas there. The slight bonus was that little Henry.