When I was 14 my sister used to have sleep overs. One time her friend Jen was staying over. I had a crush on Jen and I think she knew this. During the night my sister went to take her shower and asked me to talk to Jen. I went into her bedroom and Jen was naked and lying on the bed with her legs spread out and her pussy exposed. I looked at her and said sorry and turned around. She told me to stay and asked me to watch her masturbate. She rubbed her pussy up and down with her fingers and once she was wet asked me to feel her pussy. I did and she was so wet. I put my fingers to my mouth and licked her juices. She tasted nice. Then she rubbed her clit and in minutes started to moan and her body twitched and she groaned and got really still. She then opened her eyes and told me she just had an orgasm.
Jen looked at my shorts and they were tented out. She asked to see my penis and I tugged down my shorts and my dick came out. I stroked myself and told her how hot she looked. I moved closer to Jen and was looking at her pussy and felt I was going to explode and squirted my cum on her belly. Jen eyes got wide and she told me that was amazing. I told her I had a crush on her. Jen said she knew and my sister and her planned this night. My sister walked in and told me how hot that was.
Over the next three years we dated and I learned how to make a woman have an orgasm with my fingers, tongue and dick. A few times my sister joined in for a threesome masturbation marathon.