You and your sister have a long standing sexual relationship, but about a year ago you messed up BAD and got your sister pregnant. Now you have a bundle of joy together and the relationship has been very strained since the it was born. Your sister thinks it's because you aren't attracted to her anymore, but really you're just scared of getting her pregnant again. One happy accident is more than enough! Your sister is getting ready to go out to a rave for the first time since quarantine ended. She's bragging about going to a rave with a bunch of her older guy friends. She's wearing next to nothing and as you watch her get dressed and do her makeup you start to get jealous and realize you actually do want to be with your sister. She's nagging at you about you not being there for her since the bundle of joy was born and not taking care of her "needs". She changes her tune a little when she notices how upset you look. She apologizes and says you've been a great dad, but she has needs too! And they aren't being met. She tries to unzip your pants, but you stop her and this pisses her off. She tells you enough talk! She needs action. She needs to see that you are actually going to commit to her, or she will find it elsewhere. You agree after some convincing and go lay down and your sister comes over and jumps right on your cock with her big ass bouncing on you as her friends blow up her phone wondering where she is. They even call her a couple times. She tells you that you better pull out this time! She doesn't want anymore happy accidents. The little one wakes up and starts crying in the background, and your sisters friends continue to call and text her because she's now running late and they are waiting for her. She answers the phone right as she's cumming and you just can't help but shoot your load with her. She is so mad that you came in her AGAIN... didn't you learn anything the first time?? Your cum is dripping out of your sister's pussy and she tells you that this time you better make an honest woman out of her. She's ovulating and she wants commitment now! In your post cum stupor you accidentally propose to your sister! She's way too excited for you to go back on it. She walks out of the room to leave for the rave with your cum still visibly leaking from her pussy. You really messed up this time!