Well I just have to chime in and say that the list of incidents sounds like a good idea. I still am shocked by how young you were when this happened, and that he was also as young. You hear of girls your age (and younger) being abused, but usually by adults, or older teens. I was 14 when I was first abused, and the boy was 14 as well, and I have a 15 year old son now, and when I look at him, I can't believe a boy younger than him was doing that stuff to me at that age. It's so obviously wrong and dysfunctional. A normal child brought up in a decent loving home does not do stuff like that. I don't know the details of what happened between you, but 11 years old? That's ridiculous. That boy is a danger to others. I actually feel bad for him, because I've learned in my life and experience that kids like him are probably really screwed up themselves. They abuse because that's all they've known themselves. The kid who abused me at 14 was from a family with horribly innappropriate sexual boundaries. His mother used to expose herself to me around the house. It was sick. The man who later spent six years drugging and sexually assaulting me was his older step-brother.
Back to your situation, just be careful because a boy like that doesn't just magically get better. I'm guessing he will probably abuse again. I'm not saying he'll abuse you....I'm saying he'll do it to others.