My sister was breathing, as my son's penis slid in and out of her smoothly waxed pussy, while she rode him slowly. My sister looked up at me Breathing... heavily, she had the look on her face that she was getting ready to orgasm. I turned and headed to the kitchen to make a cup of warm tea.The next morning, after taking a shower and getting dressed up nice and sexy to head down to Jimmy Joe's as I promised. I grabbed the little pair of shiny yellow satin bikini panties that I was wearing yesterday. It wasn't that she cheated on me so much as her attitude when I caught her. I told her that I was willing to forgive her and I admitted my own infidelity at that point, not feeling right about making her feel guilty when I had done the same. She flew into a rage at that and made it clear that she wouldn't forgive me for what I did, despite my having been so understanding of her. That did it. We had both cheated at the same party, being a bit sauced and neither of us had fooled around prior to. Aaahhh, his strong hard hands were softly massaging my ass cheeks. I had noticed him looking at my ass a few times when I use to come in the library but never did I imagine that he will massage me like this or I would allow him to massage me like this.The horny librarian now completely lifted my skirt above my panties and slowly started to remove it. His fingers touched its strap around my ass and was slowly pulling it down. OMG! I could feel the chill air hitting my ass cheeks which were. Which would be ideal for my plan to come true. Until then, we had never committed any kind of madness, at the most, having sex in the car these things that everyone else has done, getting there soon I realized that the sea was very low and that there was practically no wave, as well as there were very few people also on the beach, that's why I invited her to go for a walk on the beach, she was dressed in a pair of denim shorts and on top only her bikini, as soon as we started walking I already.