Touched by cousin

My aunt, uncle, and cousin came to visit us from Chicago. He was an older boy, probably six years older than me, and just entering puberty. We were annoying the adults, so they told us to go play in my room. While we were in there, he asked if I wanted to see something, and he took off his pants. Then he made me get on the bed and he touched me for a little bit. I was scared, wondering if we were doing something wrong. Then he told me I would get in trouble if I said anything, so I kept my mouth shut ever since about it. He's in jail, now, for raping a girl in college.