As we approached the apartment, I noticed it was an abandoned under construction apartment & dark inside with 3 floors constructed. He seemed to have ...been to this place earlier as he knew the way inside. He entered before me and i was following him. We reached inside using lights of our cellphones and stood near a corner which was covered by 3 side with a wall. He just hugged me and started kissing me wild. His hands were moving all over my body, his hands were fast in reliving me of my. " We have to stop now Tim, this is so wrong! My God! Your my brother!"I took my hands from my sisters waist, put one on her on her chin and the other on the one thin strap of dress over her shoulder. Looking into her eyes, I slowly slid that strap down, my fingertip lightly tracing a line along the soft skin of her arm. I pulled her mouthto mine and gently kissed her lips, " I know it's wrong, I love you, and your my sister, but I can't help the way you make me feel!" Stillnot knowing how far. He would push in, then pull out, and then push back in. Each new thrust pushed his dick another inch farther inside of me. When he was just half way in I thought he couldn't go any further. But he kept pushing until he had all 9 inches inside of me!I felt like I was being split in two, and I loved it! He started thrusting the full length of the pole in me now. He would pull out till just the head was in me and then thrust forward. With each passing minute he was moving faster, just as I had. He moves one hand to press against the top of my pelvis with his thumb firmly on my clit. I squirt cum down over him, running down his cock, over his balls. He groans. I start bouncing up and down on his cock, cum splattering every time I hit the bottom, splashing onto his chest. I place my hands on his chest and lift up, small bounces, only keeping the head inside me, this drives him crazy with pleasure, he will allow it for a short while before he tightens his grasp and pulls me down hard,.