i just realized within the past couple years that the same thing had happened to me at around the same age only with family members. i started wondering why i hadnt seen my uncle in a long time and i remember that they used to baby sit me and then i remembered that my cousin was about 6 years older than me and used to tell me to get naked at their house and i remember feeling like it was my fault and that i was embarassed to tell my parents. and at the time it was more like "hey, an older kid is paying attention to me" and i never thought about it that way until you mentioned it. im so sorry that that happened to you but im sure you gave insight to other people as you did for me.