My stepsister caught me one day standing next to her and masturbating on her. She turned to me and asked me to cum on her pussy which she turned towards me with both hands wide open. However, I stood so close to her that she was able to hug me with her thighs. That was the first time my cock disappeared into her pussy. From that day on, my stepsister and I fucked regularly. Oh yes, the sex was always without a condom.