I caught my stepsister stroking in sofa and got her on my cellphone. She threatened to call the cops on me for being a creep who spies on his stepsis, but eventually my arguments appeared more coaxing to the point where she agreed to shag me. Damn, that lovely taut pussy was so wet and eating I could barely hold myself from nutting inside. She luved it too cuz she invited me to do it again and promised to keep it a secret. Agreed!