Since I have been married (15 years) I have had a sister-in-law that has been a tease ever since. Let's call her Nancy. She is a very attractive woman and just as sexy. We have known that there has been a tension between us since I first started to date her sister, my wife. I don't know how many times I had to masterbate after seeing her pool side.
One day we had to go and pick up her car and drove together. Somehow the conversation led to me telling her that I have jacked my cock on many occasions to the thought of her laying by the pool. She was very open to telling me that she has also told me she too has been active at the thought of me. I told her we can never pursue our attraction for each other because I love her sister, she agreed.
During the drive we could not stop talking about our solo activities. To my amazement she asked me to take out my cock and show her how I played with it. I pulled over into a side road by a tree and started playing with my cock while Nancy was watching me. To my surprise Nancy started to rub her pussy over her panties. I watched her as the wetness soaked her panties. She took her love juiced soaked panties off and handed them to me asking me to sniff them.
I put them up to my nose and inhaled the sweet smell of her pussy. Just then I felt my cock pulse with the stroke of my hand and I blew my load all over my steering wheel. I looked over at Nancy rubbing her pussy and she started to rock with and orgasm herself. We cleaned ourselves up and she told me to keep her panties. I trade them out once a week with her so the sweet smell of her pussy stays in my mind as I stroke my cock daily.