I believe most people out there think like me when I say:
We, as kids or early teens, get our sexuality developed. I mean, it starts to develop. It's WAY common that we start having desire for a close friend, we discover masturbation, and (if you are lucky

) you have these little touch experiences in practice.
You were a kid. How could you be an abuser? IMPOSSIBLE. Even the other person told you that you both were kids and it's common to do that. We are starting to grow up and DEVELOP OUR SEXUALITY.
You just need to start believing this and ignoring OCD (because the only thing that tells you are an abuser is OCD. You are not, and you'll see things this way when you start getting better).