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She was sleeping peacefully when I got home from work. I don’t know what happened to me that day or what she did that day, but I saw her particularly sexy and beautiful. I couldn’t help but know that my parents weren’t there because they were celebrating their 20th anniversary, so I knew it would probably take a long time. My sister-in-law fell asleep with her clothes on, and I could see her boobs and her pussy, and that made my dick as hard as a rock. I was masturbating looking at her, then, without thinking, I approached her and I laid down next to her to pet her. She woke up and was surprised when she saw me there with my dick outside and hard, squeezing her ass, but I think she loved it because then she told me to ride it and told me I could fuck her as long as I wanted.