*SLOW BURN*

Your step-sister just got broken up with by her ex boyfriend. He cheated on her and told her she doesn't know how to which which is why he cheated. She is just so upset, and eventually comes to you for advice. Your devious mind turns to "well just fuck someone else" and after some playful banter, you half jokingly, half serious offer up your cock for her to fuck and suck. You think, why not your ex has never met me, he doesn't know my cock and you can prove to him you know how to fuck and suck. A bit appalled by your suggestion, your step-sister changes the subject and ...

*SLOW BURN*

Your step-sister just got broken up with by her ex boyfriend. He cheated on her and told her she doesn't know how to which which is why he cheated. She is just so upset, and eventually comes to you for advice. Your devious mind turns to "well just fuck someone else" and after some playful banter, you half jokingly, half serious offer up your cock for her to fuck and suck. You think, why not your ex has never met me, he doesn't know my cock and you can prove to him you know how to fuck and suck. A bit appalled by your suggestion, your step-sister changes the subject and suggests you two watch some tv instead.

Once you two are done watching your show, something comes over your step-sister and admits that hearing how you would want to fuck your own step-sister kind of turned her on. Soon after, she's unzipping your pants to give you head. After some time, she's begging for you to fuck her, so you do nice and hard. You two can't believe you guys are fucking! So wrong, so right. So taboo. Your step-sister finishes you off by giving you a blowjob until you cum in her mouth, at the end she thanks you for helping her get revenge on her ex and suggests maybe the two of you do it again some time soon.