After a long day at work, I was taking a shower to freshen up when I noticed my stepsister in the bathroom. She was completely naked and she looked stunning. Her body was perfect, with curves in all the right places and a beautiful brunette hair that made her look even more attractive. I couldn't believe my luck! I had always been attracted to her, but I never thought I would get the chance to be with her.She looked at me with a mischievous smile and asked if I wanted to have sex with her. I was taken aback at first, but then I realized that this was an opportunity of a lifetime. I could not resist her and I let her take me in her mouth. It was the best blowjob I had ever received. Then, I took her from behind, fucking her hard and deep. It was an amazing experience and I will never forget it.