Oh that is just horrific. It hurts and brings tears to my eyes to know that innocent children get used and abused in such vile ways.
I pray that you get through this successfully and am so sorry no one saw the signs.
You were a child, you didn't let him do anything. He's a full grown adult who took advantage of your innocence and size. Please don't place any blame on yourself, you didn't do anything wrong, it was all his doing.
xx