About a month ago I moved in with my seventeen year old fiancé and her parents so we could save up for our wedding. I have to sleep on the floor next to her bed, so we can't have sex. We have had sex before, but we don't when her parents are home.
My fiancé has a sister named Jennifer who is twenty three. I normally don't like older girls, but I've always had a secret thing for her. I think she feels the same way by some of the flirting she does. I also think she may be sexually attracted to me, because when her and I have been home alone she walks around in her panties and a t-shirt and sometimes she brushes up against me in a way that I take as sexual. However, I am engaged to her sister so I have pretended not to notice anything. That was the way it was at least, until yesterday.
My future in-laws have an above ground swimming pool in the back yard, and since I work second shift, I try to do a little swimming and sunning on nice days.
Being a nice warm day, and I finished the lawn by ten o'clock, I decided to cool off in the pool. I put my bathing suit on and went out to the pool. After I got a little tired, I got out and laid a towel down on the deck to work on my tan. I laid there about five minutes, before I heard someone else stepping onto the wooden deck.
Jennifer walked over me and we said hello. She had fit her slightly plump tanning spa tanned skin into a cute black one piece swimming suit. While she was laying her towel down I was staring at her ass and talking to her about her job. My dick jumped up to full mast, but luckily I was laying on my stomach, so she couldn't notice.
When she had laid her towel down just right she laid down directly above me but instead of pointing her head to me she laid on her stomach with her legs spread and facing me. I stared in disbelief as my sister in law rubbed the lotion on her arms wiggling just enough for me to make out the details of her crotch through her swim suit. I didn't have any fear of getting caught because she would have to contort a lot to see me. She kept talking about work and her friends with me, but I didn't stop staring the whole time.
After she had finished the areas she could reach with the lotion she asked me to rub some on her legs. I took the Coppertone from her and squirted some in my hands and rubbed it into her feet and ankles. As she continued to babble on I rubbed the lotion into her calves and the pits of her knees. Then I worked my way up her thighs. Finally I reached the bottom of her swim suit. I rubbed the lotion on the outside of the base of her ass, and brought my hands to the centers pushing open her legs just a hair more. I let my fingers run over her crotch lightly, but just hard enough to feel the shape of her cunt.
She asked me to do her upper back and neck, and so i moved up hard dick and all above her lain down head and rubbed the lotion on her back, shoulders and neck. She finally was quiet.
Remembering my fiancé, I jumped in the water and tried to cool down my urges. When I got out to get a drink I found that my future sister in law had pulled her swim suit down to the small of her back and she had her arms supporting her head which was looking in my direction through the dark sunglasses. I looked at her squooshed breasts in disbelief. My dick got hard immediately again. I got out anyways and went and took a drink of my pop, but I hurried back into the pool.
From the water I took as many discreet peeps as possible, trying to get a look at her nipples. I saw her turn her back towards me and she reached back and pulled up her swim suit allowing me to see nothing. She stood up and walked to the edge of the pool, "How's the water?" she asked.
I replied honestly that it was warm. She walked to the ladder, and slowly stepped down into the water.
When in the water she swam over by me and playfully tried to dunk me. In response I tripped her under water and pushed her down under water. She came up and called me an asshole laughing, and she grabbed my head and shoulder and pushed down with all her weight. Purely on accident I went down under water and my face went into her tits which encouraged my hardon. Then when I came back up to take a breath my dick got hung up in her crotch, and she felt my dick through the fabric of our suits.
