Step-Sister in Swimsuit 3

After dating for many months, my mom and Caitlyn's dad finally married and moved in together. Our parents had sold their respective houses and we bought a large 3 bedroom property that could fit all four of us extremely comfortably. Because we now lived together, Caitlyn and I were closer than ever. We were still on the local pool's swim team and also swam for leisure outside of our meets. Both of us were now much to tall for our old swimsuits and now had larger-sized versions of our team's blue swimsuit. I was really disappointed by this because Caitlyn's old swimsuit looked great on her, clearly showing her B-cup boobs and the outline of her pussy through the material- her new suit was still fairly tight but no longer showed off her breasts and vagina well. At our swim meets, I still could not get enough of staring at all the guys and girls in their swimsuits. While the girls all had to wear one pieces, the boys were given a choice between briefs and jammers. Most boys opted for the jammers. Although I could still see bulges fairly well, they didn't captivate me the way that speedos did. Only a few of the boys, myself included, chose to wear speedos. One of the boys was a few years younger than me and was new to the team. He had short blonde hair and reminded me of a guy I had my first mutual masturbation session with. When I first joined the team at 14 years of age, I became really close with this boy named Matt. He was a skinny kid with short, spiky blonde hair and shared my affection for swimwear. After I learnt about masturbation from the Internet, I decided to have some fun with Matt. During our next swim meet, when we had finished training, I asked him whether he had heard of masturbating- he shook his head. I told him to wait until the other guys were out of the change rooms. When this had happened, I took Matt into a shower stall (we were still in our speedos) and proceeded to rub his penis through his speedo. His little penis grew hard until it reached its maximum 4 inches. I squatted on the shower stall floor and pulled his swim briefs down, revealing a very cute looking, thin, hard penis. It was smooth and completely hairless. I stroked his penis slowly at first, then moved faster. He told me he had to pee and I said that the feeling was normal and not to worry. Before long, I gave Matt his first dry orgasm and he did the same thing to me- only I managed a few spots of cum. Unfortunately Matt moved town a few weeks later so I only got to jack him off a few more times. After he moved, I spent countless nights jerking myself off to the memories of our masturbation sessions in the swimming pool change rooms. I would strip off all my clothes and put on just my speedos. Then I would either lie on my back and slowly stroke my boner through the speedo or lie on my stomach and have my pillow underneath me, humping it until I came. This was all before meeting Caitlyn though, and as I would later find out, playing with girls would be just as fun as playing with boys! Anyway, back to the main story. Caitlyn and I had finished our meet and headed home. I was now old enough to drive and would drive us to and from the pool each day we had our swim meets. Before this, our parents drove us and stayed for the entire meet. It was only recently that they had asked me to do the driving. I guess they wanted to stay home and have some masturbation fun together, away from us kids! The drive was only a few minutes and Caitlyn would always tease me about staring at the other kids in their swimsuits. 'Didn't Doug look especially hot today?' she would say, or 'I think Linda's boobs have magically grown since the last meet!' Stuff like that. Caitlyn had known I was a bisexual for many months now. As far as I know, she was completely straight but also mentioned once that she wouldn't mind experimenting with girls. Our meets were in the evening so we got home, changed and ate dinner together with our parents. By 8pm we had finished and went to our rooms, staying there for the next few hours. Caitlyn and I would brush our teeth together at 11pm before we went to sleep. That night, Caitlyn looked especially beautiful in her short silky blue nightgown, showing off her smooth, beautiful legs and slender arms perfectly. She told me to come into her room after I had finished in the bathroom, using a sexy tone of voice. I immediately got excited and after brushing my teeth and taking a nice cool shower, I stepped into Caitlyn's room. It was dark in her room, so I flicked on the light. There was Caitlyn looking all cute and shy in her nightgown in the middle of her room. She looked like an angel with her hair perfectly combed and her skin glistening. As I stood at her door, staring at her in awe, she lifted her short nightgown up just enough for me to see she was wearing her favourite pink bikini bottoms underneath the gown. She explained to me she had recently started wearing her pink bikini top and bottom underneath her usual nightgown because it felt good for her. 'I absolutely love playing with myself at night wearing it,' she said in her sexy voice and I suddenly felt my penis begin to grow. I couldn't stand it any longer. I closed her bedroom door and went to her side. Caitlyn remained standing while I knelt down and started to touch her perfectly cute little feet with my hands. I slowly and gently moved my way up her perfectly smooth legs, glancing up at her a few times to receive her cute smile. When I reached her nightgown, I began to first stroke her thighs and hips over the nightgown. I did this for a while to get me as excited as possible. When I had enough, my hands slowly reached underneath the dress portion of her gown and I began to lift the gown up slowly. I repeated lifting the gown up and letting it drop a few times, each time pushing the gown higher. When her pink bikini bottom was completely revealed, I held the gown up to admire it. The bottoms were made of a soft, silky material and Caitlyn had tied the strings on the side in a near bow. I could see her bikini bottom was slightly stained by her pussy juices. It felt kinda cool that I had made that happen just by touching her legs. My hands continued to roam upwards, eventually lifting the nightgown over her head and taking it off. I threw the gown on her bed and was left staring at a 14 year old perfect angel in a small pink string bikini. I just stared at Caitlyn and couldn't stop admiring her amazing body. I think she was starting to get impatient so Caitlyn unhooked her bikini top and let it fall to the ground, revealing her nice, round B-cup boobies! I snapped out of my trance and my hands just lunged at her breasts like a monster. I might have overdid it because Caitlyn leaned back a bit in surprise. For the next few minutes, I massaged Caitlyn's breasts, her shoulders and underarms (all completely hairless and smooth). As I was doing so I kept looking at her bikini bottom. The small patch had grown into a large patch with so much of Caitlyn's juices expelled out of her pussy. There was so much that her bikini bottom couldn't contain it and a few drops started dropping onto the floor! I decided that I shouldn't leave Caitlyn hanging like this and that I should finish the job. I pulled her wet pink bikini bottoms down to her ankles and started to rub my whole hand over her entire hairless pussy. It was soaking wet! After a minute of swiping, I went underneath her folds to find her clit, fingering it slowly at first but then faster and faster. For good measure, I also stuck another finger inside her vagina, twirling it around fast to feel the completely wet inside. Caitlyn couldn't hold it anymore. She let out a long, soft moan and her body stiffened in its standing position. For 30 seconds her body tensed and relaxed multiple times as orgasm after orgasm shot through her. When it finally subsided, Caitlyn looked exhausted and her sticky, naked body collapsed on top of me. We both fell to the floor, panting. 'Hope you had fun!' I said. After getting her breath back she replied 'sure did bro', then proceeded to get off me and pointed at the bulge in my pants. 'I think it's your turn to have fun!'