Is it really so very surprising?
Brothers and sisters play together. I am a twin with my brother. We literally grew up together. From the earliest days, our parents bathed us together, and when we were younger we would run around naked all the time on our farm.
There were swimming holes and a river. If it was hot we would just strip off and dive right in. As we grew older and I guess I started to develop a little earlier than him, it didn't stop us. Why would it? We just swam, goofed around, climbed up onto the roof of the barns, whatever.
One lazy hot summer afternoon, we were on what we called our 'sun deck'. In fact it was a flat area on the roof of one of the barns that used to have a dovecot before a storm tore it off. We were naked, laying half asleep in the hot sultry air. I guess thats when I saw my first hard-on. I was about 13, and I saw Chris lying there, asleep, with it sticking up hard in the air.
A few weeks later, we got to talking about it. He told me he touches it and makes it spurt, I told him I touched myself and made myself cum, so it seemed natural to do it together. He would jack off and I would jill myself and we watched each other. Inevitably, one day we touched each other.
We never went the whole route, or even came close, but from time to time we would masturbate each other. Sometimes I would do a teazy little strip for him and other times, he would pretend he was going to fuck me, but it was only role play.
We used to pee in front of each other as well. He seemed to really like watching me squatting there and peeing. One day, I got took short and peed in my panties.
I guess it naturally stopped when we sold the farm and moved to a city. I found a boyfriend and he found a girlfriend and it just stopped.
I don't get why people get so up tight about it. We never did 'it', we never came close. We were just two kids, living out in the middle of nowhere, growing up together and goofing around. That's all.