My stepsister caught me masturbating and got instantly horny. She couldn't resist joining in, grabbing my hard cock and stroking it. Before I knew it, she was riding me, her tight pussy gripping my dick as she moaned loudly. We fucked hard, our taboo desires taking over. She loved every second of it, cumming multiple times before I shot my load deep inside her. Now, we can't keep our hands off each other.