Anger turned into desire when I found my stepsister, Naty Delgado, and her boyfriend in a heated moment at our parents' house. Instead of stopping them, I joined in, our bodies entwining in a passionate dance. Naty's Latina curves and big booty were irresistible, and I couldn't help but grab her thick thighs as she rode me in reverse cowgirl. We explored every position, from doggystyle to cowgirl, her tight, wet pussy clenching around my cock. Our threesome ended with us all tasting each other's pleasure, our faces glistening with cum.