My cousin would come over and stay at our house several weekends each year. We were always spending time together and most of the time it would lead to her touching my cock or I would slip my finger in her pussy. We never took it to the next step until one day her and her parents had came over to visit. I had been out doing chores and didn't know they were there. I had stopped to take a piss when I seen Cary looking at me. I motioned for her to come over and help me finish. She took my cock in her hand and held it while I finished pissing. When I was done she kept rubbing my cock until I was about to explode. I don't know yet what came over me but I grabbed her by the shoulder and spun her around. I grabbed her shorts and snatched them down to her ankles. She has a perfect ass and bolnd pussy hair and tiny tits with these puffy nipples. I didn't stop to think and she didn't try to stop me. I pulled her back onto my cock and slid it in her. She wasn't soaking wet but she was wet enough I slid in with a little force. She screamed and it scared me a little wandering if our parents had heard her. It didn't scare me enough to stop though. I got into a rythym and soon was slamming my balls against her thighs. it didn;t take long before I was cumming inside her tight little hole. I didn't know until after we had fucked that it was her first time for anything other than my fingers. We fooled around and fucked everytime we could after that. even today, some 25 years later when we are together one of us is groping the other one.