I know what I was thinking about. On the Vistavision screen at the back of my mind, I was playing the last scene of me wanking furiously as I watched her, bent right over, sliding her fingers in and out of her pale brown little asshole, and then shooting all those streams of gluey cum all over her back and ass cheeks. Until today, I had never thought of Stephanie in the same way I had always thought of all the other preteen candy that was around. Now that I had discovered that all this time I had had a prime example of what I like best right under my very nose in the form of my adored ten-year-old niece, just waiting to be debauched, I was already having the wildest fantasies about what we might get up to in the days to come. If only she could be induced not to panic at the thought of what she had done this afternoon at the Aquapark and what she had let me do, I hoped to be able to train Stephanie to play the role of the absolute slut that one part of her obviously wanted to act out.

God, now I came to think of it, she was a stunner, with that mock-innocent look on her face all the time, and those little puffy titties beginning to poke out, and her long slim legs and, best of all as far as I was concerned, that amazing, and amazingly tight, little bubble bum of hers which she had been so excited to show me that she had ended up cumming just from the thought of my shooting my gobs of spunk all over it. Wow, if I could really get her to lose all her inhibitions and really let go, then there was no telling what obscenities we might get up to before she began to lose her preteen charms.

Who knows? Maybe she had other little friends who might join in the fun. Maybe I could get her to perform with some of the little girls I had picked up over the years, not to mention the few like-minded friends who I trusted enough to keep our activities an absolute secret. First of all, though, seeing that at the park she had in fact only let me look without touching (that was a bit strange, but with luck it could be the sign of a nicely twisted little mind), I HAD to get my hands on that fabulous body of hers. I had to feel her long slender neck, lick and suck those tender nipples, slide my fingers along her hairless little slit, over her budding clitoris and into a nice wet little-girl slit.

More than anything though, I had to caress for myself those gorgeous ass cheeks of hers, slowly pull them apart and rest my eyes on her virgin asshole, taste the soft membranes inside that hole with the tip of my tongue, wet it with the precum from my raging cock and - oh god! if only, if only!! - watch as my seven inches of rock-hard meat forced its way in and in and in and in that long dark sheath until I could feel my balls press against her childlike pussy lips. Now that Stephanie had set me afire, I would never rest until I had buggered her delightful bum and felt myself empty my load of seed into its very depths.

That said, I had to admit that her silence may have been giving off a completely opposite message. Perhaps she was in fact horrified by what she had just discovered about herself, and wondering what she should do to get herself out of the hole she had got herself into. Perhaps she was at this very moment deciding that she could never see me alone again. Or, worse still, that she had to tell someone - a priest? Or maybe (god forbid!), her daddy, my brother!! - what awful wickedness her once favourite uncle had got up to at the Aquapark today. But, shit, it was she who had done nearly all the getting-up-to. Thank god she had no idea that I had been taking every chance I could find to ogle and touch all the prettiest little girls around the swimming pool, and that I had even managed to shoot off all my cream against the scrumptious backside of that little girl who had let me fondle her tits, pussy and bum on the slide until she too had a massive preteen orgasm.

So, as we drew up to the house with barely a word spoken between us, I was in two minds - one part of it galloping ahead into further sexual adventures, and the other half wondering anxiously what I was going to do if somehow I had got it all wrong.

While I prepared her favourite spaghetti carbonara for dinner, even going to the extravagance of pouring her out a glass of a very good Montepulciano, Stephanie stayed quietly in her bedroom. I called her and she came to the kitchen with her head down, studiously avoiding looking me in the eye. ......(cont)