This happened over three years ago and I still think about it daily. Our neighbors daughter Kelli was 14 years old. Under the circumstances they didn't travel much and were mostly a 'stay at home' family. After becoming friends, Karen felt comfortable asking me to occasionally watch Kelli, usually for an hour or two. Karen and her husband wanted to go out to dinner for her birthday one evening and asked me to watch Kelli at my house.
Kelli usually kept herself occupied but would occasionally cuddle up with me while reading the paper or watching television. On this particular evening I was reading a novel and not paying much attention to her, but after a time I went to check on her and found her in my bedroom. There were numerous articles of clothing removed from our closet and she was in the process of trying on one of my blouses.
It was the first time I really noticed that she was beginning to develop on top. The fact she did not wear a bra startled me, and it caused me to focus all my attention on her perfectly developing breasts. Prior to seeing Kelli in my blouse braless, I had never had a conscious thought about women sexually. As I began putting away the clothes I started to help her remove my blouse. I felt the back of my hand lingering on her beautiful little breasts and I remember trying to see if her nipples would respond to my touch (mine had already responded). As Kelli quietly waited for me to finish unbuttoning her, I felt my body raging with desire. She didn't seem to mind it was taking me so long to remove her blouse.
My hand was soon in my own bra which confirmed my own state of mind. I had never been so wet, or horny in my life, in fact, I could wait no longer. I turned away from Kelli, slipped my middle finger into my panties, and feverously massaged my clit into a resounding orgasm. It was without a doubt the deepest orgasm of my life, and it left me sprawled out and exhausted on my bed. I have watched Kelli a few times since, but have never repeated that beautiful experience.
I must admit, it has crossed my mind literally hundreds of times, and only the combination of fear and embarassment keeps me from trying again. I would estimate in the last few years, this experience has been the focal point for over 100 orgasms and I'm sure it will be responsible for hundreds more.