If You Promise Not to Cum Too Fast, I’ll Let You Finally Fuck Me! Hell hath no fury like an unsatisfied stepsister. Serena just can’t seem to get her boyfriend to fuck her right, he cums too fast and has no rthythm. When Juan hear’s his stepsister chew out her boyfriend for not making her cum, he is a little intimidated by the whole situation. But later, when he spies her rubbing her pussy he can’t help but take a long look at his horny stepsister. Maybe a tad too long… oops~! She caught him. But wait, wait, wait… hear her out. If Juan promises not to tell anyone – or cum too quickly – she’ll allow him to fuck her! Serena starts off by throating her stepbro’s big cock. Once he’s super hard, She climbs on top of his dick and starts throwing her pussy back on it, twerking it up. She feeds her big tits to him as she rides him as well. Juan manages to bring his horny sister to multiple orgasm before unleashing a hot sticky load all over her willing face!