This Story is absolutely true. The names have been changed for discretionary reasons. This is the first part of several stories to come building up to me fucking my hot older Sister-in-law, Mary.
At the time this part occurred I was 42yrs old, my sexy wife was 41yrs old and her gorgeous older sister who was 15 years older than Molly was 56yrs old. I had always found Mary to be hot a hell from the first day I meet her when I started dating Molly some nine years ago. Even on our wedding day Mary distracted me wearing this skin tight sexy dress and slutty heels. Molly and I were and are still very happily married when these events with Mary occurred. We had been married a little over 8 yrs.
But first a little about my wife. Molly is sexy as hell and very fit. She is 5'6" 120lbs olive skin, dark brunette hair, hazel eyes, 34a small, but perky breasts, athletic legs and a fit round high ass to die for. She is very sexual and our sex life is great. Her older sister has the same build. Mary is also 5'6" probably 115lbs with lighter sandy brown hair and hazel eyes. Mary recently had a boob job to a healthy 34C, fit build, amazing legs, tone body and similar ass but just a little less thicker than Molly's. She carried herself very differently than my wife. She was very confident with herself and her body. She had a very rare sexual energy that she could put off. She loved to show off what she had, with sexy outfits and was very flirtatious.
Both have sexy feet and toes and for me, who has a huge foot fetish, I found this hot as hell. Both sisters are always in the gym together, working out, taking classes and running races to stay fit. Needless say I wanted to fuck Mary the first time I met her. She was the older version of what Molly would look like 15 years later but she was also different in personality which was also a huge attraction. She was always touchy and flirtatous with me. The two would always get compliments about just how similar they were. Again this appealed to something very carnal and deep inside of me and very quickly I developed a sexual lust for my Sister-in-Law that only got worse as the years went on.
It started innocently enough whenever I would see Mary. Whether hanging out with Mary and her husband, with Molly or when she would babysit our kids, drop them off etc. I would then fuck Molly that night imagining it was Mary. All day, I would edge thinking of fantasies involving Mary. What she was wearing, her hitting on me or me advancing on her and claiming her sexually. I would do this until Molly got home and I could fuck her to fulfill the uncontrollable desire.