Sequelitis where they go the vanilla option. Also would be cool if they had a jealousy arc where one of them gets a significant other and the tension leads to some bad choices.
Despite her vehement insistence on no more sex taping, she's definitely thinking and feeling: "Hey Mikey, I Think She Likes It!" So a repeat session is just a matter of time away.
Me and all the viewers: BOOO! Come on!