My step-sister and I have a strange relationship, we are "really close". Recently she had to get a pregnancy test but instead of getting rid of the test in the outside trash she threw it away in the kitchen trash. Our step-dad found it and confronted her, he demands to know who she was napping with that she would need the test. Our Step-Dad calls me into the room, he knew more then we thought... He knew I have been fucking my step-sister, now he wants to watch what we do when we are alone. Our Step-Dad sits there as I pound my step-sister's tight pussy!