At 17 Katey went to live with her big sister. Coming from a large family there was quite an age difference, with Mary being the oldest and Katey being the youngest there was almost 16 years difference in their ages, and a good 20 years difference between Katey and her Brother in law Scott.
Scott had always held a special place in his heart for Katey. It was hard not to. She was only 5 when he married her sister and moved to the neighboring state, and Katey came to stay with them many times. Snuggling up to him like a little kitten when she was younger, and retaining that playfulness when she grew older. He'd always felt very fatherly towards her and loved her. This had never been a problem until she hit her teen years.
Katey developed a very sexy body by the time she was 13, and with each year her package got sexier and hotter. Scott noticed, every man around her noticed. And Katey was so happy and friendly that she drew people to her like flies to honey. When Katey was 18 she came to live with Scott and Mary for the summer to help Mary out with her 10-year-old twin boys.
Scott found it more and more difficult to keep his hungry eyes from wondering to his sister in laws tight body. She spent most of the summer with the boys by the back yard pool, her tanned lithe body barely contained in the skimpiest of bikinis. When Mary commented on that, Katey called her a prude. Katey seemed very comfortable in her skin. Whereas Mary was very straight laced and not the fun girl that Scott had married all those years ago. Mary threw her whole self into motherhood, saving no time or energy for Scott or their marriage. Scott had tried many times to change this, but he finally just accepted that the distance between them had thrown them more into the role of roommates than lovers. Mary seemed to lose all interest in sex after the twins were born.
Scott found himself thinking about Katey more and more. He watched her day after day and found himself having more boners than he'd had in years. He enjoyed being aroused, and entertaining different fantasies about Katey as he relieved his aching balls. His favorite times were playing in the pool with Katey and the boys. This gave him an excuse to touch her, feel her firm young body, and rub against her ample breasts. It seemed her nipples were always hard as erasers, standing at attention, tormenting him. He noticed how they tormented others also. Each might Katey went out with a group of kids from the neighborhood, or had them over to swim. Scott noticed how at ease she was with everyone, playful, funny. There always seemed to be a lot of wrestling going on in the pool, and Katey was always right in the middle of it.
One day he took the afternoon off from work, Mary was taking the boys to a children's play over in the next town. Scott thought he'd go home and change and then get in a round of golf. As he walked through the house he glance out by the pool and almost creamed in his pants. There was Katey, laid out on a lounge chair, topless, with one hand down her bottoms and one hand tugging at her nipple. The backyard was very private, and Katey thought she was all-alone. Scott approached the screen door and he could hear her moaning 'mmmmmm yes Scottie, right there, touch me, it feels so good.' Scott was paralyzed. Scottie, was what she had always called him, but never in that deep sexy voice.
Not even remembering moving, he was standing over her, casting a shadow over her half naked body. He was rubbing his cock through his pants when she opened her eyes. His heart stopped, he thought she might scream, or run, but instead she looked up at him through half open passion filled eyes and licked her lips.
'K-K-Katey, what are you doing?' Scott stammered.
'Thinking of you……' she moaned and he saw her fingers pinch her nipple.
Her eyes lowered to where his hand was slowly pressing against his hard cock. Again, she licked her lips.
'Maybe you should go inside an get some clothes on…' Scott suggested.
'Maybe you should stay out here and take some clothes off….'Katey countered with a smile.