Watching my boyfriend seduce my stepsister

I've always been a bit of a voyeur, and my girlfriend is more than okay with it. She's actually quite the exhibitionist. So, when my step sister came over, I had to take the opportunity to see her with someone else. Little did I know, my girlfriend had already set something up with my stepsister. Watching as my girlfriend seduced my stepsister was a sight to behold. The way she worked her magic on my stepsister was incredible. Before long, my stepsister was stripping down and letting my girlfriend eat her out. It was a sight to behold, and I couldn't help but get turned on. Seeing my stepsister get fucked by my girlfriend was a dream come true. I hope my girlfriend and my stepsister can make this a regular thing.