When I was a young child, my cousin...

When I was a young child, my cousin (of the opposite sex) and I watched a rather racy movie. We then pretended to have sex. One day we were caught by my mother. At the time we didn't know what we were doing and nothing had happened other than each of us seeing the others privates, but it haunts me to this day. He has ADD and wasn't on meds so he has no recollection of the events (he has very few memories of childhood actually). I pray that God can or has forgiven me. I have asked him to do so many times, but I continue to ask so that God knows I will not forget the wrong I did.