My girlfriend wasn’t too surprised to see her sister Matty take my big cock in her tiny mouth. Knowing what a slut she is, she could only join us in this wicked game staged by her lustful stepsister. I watched with great delight as my cock disappeared under her mouth, wanting her to swallow it all the way. My girlfriend’s ego got the better of her, and she wanted to be shown that she was still a better dick sucker. She stiffened my penis to the maximum with good jerking and licking. And when they both started licking my big tool at the same time, I went crazy with excitement and had to fuck two girls right away. I had never had a threesome experience but it was my biggest fantasy … sex with two girls! My girlfriend put Matty in a doggy position with her hands on her bum. I had access to her little holes and immediately stuck it in her shaved cunt. I started drilling her like a real bitch while me and the girl looked into each other’s eyes. Little Matty started to shake and have an orgasm while I was inside her, but we didn’t let her stop. We teased her even more until she cum. Now it was my girlfriend’s turn. She rode me while I was lying on the floor, and I started to follow her pace. Holding her ass, keeping her balance, I let her fuck herself and enjoy my big cock. Her sister kissed her stiff nipples, making her even hotter. Both naked girls rubbed their pussies and played with their titties. They started jumping on my cock faster and faster, gently kissing each other. This scene turned me on so much that I started to pound them hard, accelerating the pace. Both girls started cumming on my cock and moaning with great pleasure. I’m never bored with my girlfriend and her sister, and we’ll definitely repeat this adventure sometime.