Thanks guys. My step-brother and I met when his dad started dating my mom. I was 13 and he was 15. We actually became good friends and not any real tension. We moved into their house and although we shared a room it was a big room and had our own bathroom. Even though he was a couple of years older, puberty-wise he had matured quite a bit more than me. He was getting pretty thick even at that age so kinda hard not to notice when I caught a peek at him in the bathroom or changing clothes. And even at my age then I was getting pretty curious.