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You my step-son, catch me cheating on your step-father with another man. I spot you through the door as I'm getting fucked. I beg you not to tell your step-father but you insist that you will unless I suck your cock. I am so disgusted but I can't hurt your step-father so I reluctantly agree. I proceed to suck your cock when you notice me start to like it. I tell you we have made it this far so we might as well fuck. What a pleasant surprise, my step-son has such a great feeling cock!