I want to f*** my girlfriends sister. My girlfriend and I have been dating for years now, and the whole time I just pray that her sister lets me f***..Back in the day she’d come out of the shower in her underwear and that was when I realized how nice her a** was. I hope this doesn’t make me creepy but I always secretly watch her a** and picture me and her f****** 24/7. Its driving me mad. She lets her a** hang out the bottom of her shorts and I’m starting to think she does it on purpose. My girlfriend is going out of town for a week leaving me and her mom alone..she has a history of f****** on the first date, and she just had s** with someone she met two days prior. Would I have a chance? I need to know, because even while me and my girl have s** i picture it being her.