Sometime in the 90s i went to america to visit my dad. He lived hundreds of miles away from the ocean but his town was on the shore of a huge lake that had beaches and even a nudist beach a few miles out of town. My dad had a girlfriend and she had a daughter a few years younger than me in her early 20s who i shall call \'P\'. On one of my first nights there it was decided that P should take me out on the town. We went to a bar and had a good night drinking beer and shooting some pool with P all the while flirting and making suggestive remarks. I went along with it but in the back of my mind was the fact that she was my dads gfs daughter so nothing should really come of it. on the way she said she wanted to show me something and drove to into what looked like a park car park. we got out and she led me up a dark path to a footbridge over a river. the bridge was locked up tho and P said damn she couldnt take me to what she was going to show me. the next thing took me by surprise tho as she grabbed me and started to snog me. i didnt put up a fight tho as she was a lovely young girl and it wasnt long before she was undoing me trousers getting my cock out and squatting down to start sucking on my it. it all happened so quick i was still in a bit of shock but not saying no as she was doing such a good job of polishing my knob. after a while i reached the point of no return and told her so but she just kept on sucking while i filled her mouth. when i was done she got up and said wed better get back. A few nights later we had a similar night and on the third night out i got to fuck her. i was a very keen runner at the time and went out quite a few times for a run down by the lake shore. It was a very hot summer there at the time so i planned my runs so i could pass by the nudist beach, strip off, and have a nice cool swim in the lake. after one of these swims i stay sat on the beach, nude, about 20 yards away from a group of 3 guys and a girl all about 20 yrs old. I hadnt been there long when one guy shouted over to me something and i replied back and the guy said \'hey you from england? come over and have a beer with us\'. we sat talking and drinking for a while. They were all nude like me and the girl was gorgeous with blonde hair, slim figure with small boobs. being in the presence of such a lovely girl i couldnt help but get a semi hard on and as it was about 3/4 of its 8\" full length it was a bit noticable. \'I hope thats not for the guys\' one of them joked. \'no its definetly for the lady\' i said. \'i think you need to go back in the lake and cool off\' he joked again, \'why dont you go with him (girls name)\'. ok she said and off we went. at first there was the usual mucking about splashing water at each other then it progressed to physical contact but still messing about etc. the mood changed and while up to our necks in the water a hand found its way to my cock. she said something about liking seeing it on the beach and should we go and find somewhere to ourselves back on the beach. of course i said yes and she led me by the hand while we found a secluded spot a few hundred yards from the guys. she told me lay down and she lay on top of me as we kissed. she moved down my body to suck my cock for a while before moving back up then slid her pussy down on my rock hard cock. i was in heaven. she rode me like this letting out little squealing noises as she came. we switched around so i could do her from behind then i fucked her till i was about to spunk then pulled out to splash it all on her bum. a quick dip in the lake again to get the sand and spunk off and we returned to the guys. They knew what wed been up to and one of them was her bf but he must have been ok with it as they were just the same as before.