I was only 17, my younger sister, Jessica, was 16.  She was intrigued with by my body since she began to become sexually aware and her curiosity transitioned into her later teen years. We both went to the same high school, but saw each other rarely there. At home our rooms were separated by a small bathroom with a shower, this was mutaul territory for the both of us. The bathroom was rather old, along with the doors, whic...