The little sister is shocked that her beloved older brother has finally gotten a girlfriend. Filled with jealousy, she tries to send a breakup message to the girlfriend from her brother's phone, even saying things like, "How could you make a girlfriend while I'm still your sister!" She's completely gone off the rails! But while she's passed out from drinking, her sister sneaks in and starts riding him, thrusting her hips wildly! And despite it all, it feels amazing!