Did y'all have such experiences??

So , Ive had sexual relations with a "friend" of mine who was 3 years older than me when i was in 3rd grade. She would ask me sexual questions and show me porn . she persuaded me into doing sexual things with her. I never felt it was a bad thing but i didnt feel anything good from it either. She was the one who always asked me to do things . I wasnt even aware of what sex was when she made me do things. Then suddenly after some months she pretended as if nothing ever happened between us and i just went along with it. Now that im looking back , was it sexual assault that she did to me? I wasnt of the age to consent.