I was watching porn and wanking when my stepmother walked in on me. I was really shocked as I thought she was out the house and she looked just as shocked as she stood looking at my cock, all seven and a half inches of it. Then I quickly pulled my bed covers over myself. Cerise quickly apologized and left the room. After getting over my shock, I finished what I had started and then after cleaning myself up and decided that I needed to apologize to Cerise. She was sat in the lounge with my dad. It wasn't the moment to talk so I let it go. Then a few days later I found her on her own. I quickly apologized and she was good about it saying it was her fault for just walking into my room. Then to make sure I was ok she went on to say that masturbating was normal and most adults do it from time to time. A few days later we were off to the seaside for the day. My younger brother was a wimp and hated the water. I ended up in the water with Cerise playing with a ball. I was enjoying the way her tits bounced as she jumped to catch the ball. Her arse looked good as well. Then I realized that I had got hard and when Cerise grabbed me and went to push me into a wave she saw my predicament. After the wave had washed over us she grabbed me again saying, "I can't leave you like that," and slipped a hand into my trunks and wanked me off. It took less than a minute. She was much better than my girlfriend at wanking me. Then my spunk was joining the foamy waves and being washed away. Cerise pushed my cock back into my trunks and removed her hand. "Is that better," she asked. I told her yes. Then we were back on the sandy beach on our own towels drying in the sun. My father had no idea what Cerise had just done for me. I must admit I couldn't get it out of my head and nearly had a second problem to deal with. Back home in my bed I had a wank thinking about Cerise's hand on my cock. Over the next few weeks I would try to watch Cerise in compromising positions like bent over picking something up and imagine what I would like to do to her. She also walked in on me wanking a few more times. Then a while later I was having a good wank again thinking I was in the house on my own. Cerise must have come back and was again watching me. This time she didn't rush out the room when I saw she was there, she just stood there watching. I was pretty sure I see her lick her lips when I came before she finally left my room. Then my father was taking my brother with him to our grandparents for the week, they lived the other side of the country. That evening I sat with Cerise watching a play on television. There were a few raunchy bits in it and I got hard. I made no attempt to hide my hard cock. Then it finished I went to my room and stripped off as I lay on my bed. I had just started to wank when thinking about the play and Cerise imagining she was in the raunchy scenes. Then the door opened and there she was in her pink nighty. She initially just stood there watching me wanking. Then as I closed my eyes I heard her move and then felt her sit on my bed. "Your much bigger down there than your father," she told me, as her hand replaced mine and continued with wanking my cock. "It's beautiful," she said as she licked her lips to wet them. I was just expecting another wank. Then she moved forward and slipped almost half my cock past her lips into her mouth. She was sucking my cock as she wanked the lower part with her fingers. Her other hand was playing with my balls. I was looking down her nighty at her 36D boobs. I had seen them many times in just bra and pants and in bathing costumes, but this was the first time I could see her aureola and nipples. Her nipples were about half an inch long and looked quite stiff. I imagined sucking on them. I reached into her top and fondled her breast. She quickly held my hand still on her breast. She was bobbing quite hard on my cock and I was now very close. Then she sucked extra hard and I came with some force filling her mouth with my cum. Cerise calmly sucked it all in and then swallowed my full load. She extracted my hand from her breast and then left the room and went to her bedroom. The next day, Saturday morning, I found her stood on a stool looking for something in a high cupboard. Her arse looked great in her shorts and I stood looking at it as she rummaged in the cupboard. Then she started to come down from the stool and started to stumble. I was quick to catch her. One of my hand landed on her arse and the other grabbed her left tit. Once she was stable again, I took more time than necessary before removing my hands. I enjoyed her scent as it filled my nostrils. Cerise just said thanks and then went on with what she was doing. Later again I was watching her as she was bent forward emptying the washing machine and putting some items in the tumble dryer. I got another stiff cock and went to my room. Another wank. That evening Cerise picked out a film to watch. It was more than raunchy it was quite pornographic in parts with full nudity and couples making love. Not that you could actually see them screwing, but I again found myself hard. At eighteen I had plenty of petting with girlfriends, and several blow jobs and wanks, but hadn't actually had penetrative sex yet. I was desperate to shag someone and any good looking girl or woman often caused me to get hard and with a cock the size of mine it was hard to hide. I limped off to my bedroom. Cerise again appeared in my doorway and watched me wanking. I was hoping for another blow job and I wasn't disappointed when she came to me and again took my cock in her mouth. I put one hand on her head as she bobbed up and down and the other in her nighty. This time she let me play with her tits, moving from one to the other, rolling the nipples between my fingers. I again cum and Cerise swallowed my load. Then instead of freeing herself from me and leaving, her head went back down on my softening cock sucking it back into her mouth. It took a few minutes, but I was getting harder again rather than softer. She was making like meowing noises as she sucked and I played with her nipples. Then she sat bolt upright. "Oh fuck it," she said and she pulled her nighty off and straddled my hips. She grabbed my cock and held it up right as she brought her pussy down onto my cock. Then it was slipping into her pussy. I was finally in a woman's pussy and Cerise was bouncing up and down on my cock. "It's fucking huge. Don't you dare cum until I've come," she ordered. "Ooooh, Ahhhh, Argggh left her lips between gasps and groans. Then she sped up and then with a final groan she plunged down on my cock and collapsed on top of me with her tits smothering my face. I didn't mind as I could now kiss and lick her tits as I tried to keep moving. Her weight on me prevented me from moving enough to come, so I contented myself with her tits. A few minutes later she again sat bolt upright, "Fucking hell it's still hard," she gasped. She rose and dropped back on my cock half a dozen times. Then she pulled herself fully off of me. I was quite disappointed. I needn't be, as she turned around and knelt down on all fours with her gaping pussy glaring at me. "Well get on and fuck my pussy," she yelled at me. I was quickly back inside her, this time from behind. She groaned loudly as it sunk all the way in to my balls. Then she was bucking and fucking herself on my cock. I didn't have to do anything, but I wanted to and thrust back against all her thrusts as she moaned and groaned. She came again and I pounded hard to reach my own orgasm and pumped my cum into her pussy. My first time cumming in a woman's pussy. Cerise spent the night in my bed and we screwed again in the morning. Another first as we faced each other with me between her legs. I again came in her. Later we had a talk about sex and she reminded me that I must use condoms with my girlfriends and a few days later gave me a couple of packets to carry with me. She spent the rest of that week in my bed. Over the next year We made love on every opportunity that we could. She taught me how to lick, suck and please a woman. We fucked in loads of different positions and places. My first fuck in a car was with her in my dads car. Then I met a girlfriend and had my first sex with another woman. My new girlfriend was so good. I put that down to the training that Cerise invested in me. I eventually married my girlfriend. That didn't stop the now rare fucks with Cerise.