You and your step-sister are madly in love; any chance you get you spend it together. You are getting more and more worried about getting caught by your step-parents. You have both decided that this is what you really want; you want to be together forever. You agree you are going to move away, get married and start a new life, but before you go you make love in your step-family home one last time, before nearly getting caught and being reminded of why you need to move away.
You both leave home, get married and start a new life in a new town. You make love to each other, so freely without the chance of being caught. Your step-sister also stopped taking birth control so you can start your own step-family together. You have sex in multiple positions until giving her a huge creampie and hopefully impregnating her!
A few months later, your step-sister has a visible bump. You are both so happy and can't believe this is your new life together, free of judgement. You make love again with your step-sister riding you with her visible bump! You are both so excited for your future together!