HMN-880 - Caught by my girlfriend's sister at an M-themed adult club, now I'm completely broken by her sadistic games

What are the odds of running into my girlfriend's sister at an M-themed club? She's wearing an insane bondage outfit and tormenting me with a devilish smile. Even at home, with my girlfriend nearby, she constantly teases and humiliates me. From bondage to all sorts of shameful acts, I've completely submitted, hooked on the 'reward' of her forced insemination.