Note: This story was dynamically reformatted for online reading convenience. Pt 1 I really enjoyed my early years at my secondary school, mainly because of all the new friends I made. One girl in particular, Sara, became my best friend, and it wasn't long before we were having sleepovers at each other's houses. Both sets of parents were fine with the idea, although had it been a boy instead of a girl friend, they might have been less accommodating for a couple of fairly naïve 11-year-olds! Our young bodies were starting to develop at that time, and, like a lot of other girls of that age, we used to compare ourselves to each other...growing our little boobs, hair starting to appear in places where it never was before, that sort of thing. We would take our tops off and look at each others boobs, wondering whose were bigger, checking how much they'd grown, and amidst much giggling it didn't take long before the looking progressed to touching, and it was only then that we discovered how nice it felt to touch and be touched. We'd practise kissing too, giggling about how we had to learn how to do it properly. As the months went by, leading up to our 12th birthdays, we got more and more adventurous, discovering that we really enjoyed kissing, cuddling, touching and stroking each other's young, developing bodies, and before too long we were getting very new feelings of arousal whenever we did so. That, of course, encouraged us to try more new things, which got even better when we discovered erotic videos on the internet and more "grown up" movies on TV. Although we'd decided quite early that we wouldn't penetrate each other, having heard about magical things called virginity and hymens, by the time we were both 12 we were regularly trying out pretty much everything else, and in particular oral sex, which we both couldn't get enough of! Very often, especially on sleepover weekends, we just couldn't wait to get somewhere private, get naked, and continue to experiment on the best ways to give and receive our orgasms. Things usually got very noisy, too, though I think our parents just assumed we were playing children's games or something... One such weekend, we were at Sara's house, and as usual had gone straight up to her bedroom to have some fun, and it was only later that I realised we hadn't shut the door properly. We both quickly undressed each other, and were lying on the bed using fingers and tongues to turn each other on. Licking and sucking each others nipples, clits and pussies, we were totally oblivious to anything happening around us. At one point, I was lying on my back, eyes closed and legs wide apart, with Sara kneeling between my legs, her pretty little bottom up in the air as she licked me out while fingering herself between the legs. I was in heaven, one of my hands holding her head against my pussy and the other playing with my nipples, and just as felt an approaching climax I opened my eyes, just in time to see her dad standing at the open door, which was directly behind Sara, and from that position he would have had a perfect view of her cute little arse and sexy wet pussy as she played with herself while licking my clit! I was shocked and embarrassed at first, but then glanced lower to see he had his erect cock out and was wanking while watching his 12 year old daughter in a lesbian scene with her best friend. I screamed as the most powerful orgasm of my young life hit me, not just from what Sara was doing to me, but even more from the extreme naughtiness of having her dad watch us, and at the same time I saw him orgasm, spurting streams of his cum onto the wooden floor. It was the most amazing and arousing sight I'd ever seen! As our eyes met, he had a guilty and embarrassed look on his face, and he shortly disappeared without saying a word. I didn't mention it to Sara then, because I wasn't sure what her reaction would be, but I knew even then that I wanted it to happen again. Shortly afterwards, Sara went for a pee, and I took the opportunity to go over to where her dad had been standing, and seeing the splashes of cum on the floor, I scooped up a fingerful and tasted it - a shivering mini-orgasm went through me as I thought about how naughty I was being, and then another shiver as I took another fingerful and rubbed it against my pussy. Her dad seemed very old to me, at my young age, though he was really only in his mid-30's, but he did have a very sexy body, and although his cock was the first I'd ever seen, I could tell from comparing with our porn viewing that it was a very respectable size, and for a long time afterwards I was fantasising about how it would feel to touch, and to have in my mouth and pussy. I knew even then that I wanted it, and understood for perhaps the first time that maybe I wasn't a lesbian after all! (to be continued...?)