I was grounded by my girlfriend and had an insatiable sex drive. I often didn't even look at the face of whoever it was and would just thrust my erect penis into the exposed butt, pistoning away and ejaculating inside the vagina. Ahh, it felt so good! But then I realized that what I had penetrated was my girlfriend's sister's pussy, and now I'm absolutely fucked! Or so I thought, but it seemed like I had lit a fire...
