a member

I was groomed at the age of 13. The older guy, who we'll call Sshai, was a friend of mine. I met him through Genshin Impact, and was genuinely happy to finally have a friend because I've been playing alone for such a long time. We eventually got close and I trusted him with things I don't usually tell other people. I thought that he'd be one of those supportive friends. And he was! At least for a little while. I started to gain a crush on him, which was honestly more on admiration because I really looked up to Sshai. I kept it for a while before finally confessing, I was ashamed and hopes that he would distance himself. But he didn't! And that should've been the red flag for me to leave. He started calling me his girlfriend, even though I never really agreed to anything. He made sexual comments about me, and it made me uncomfortable. It was like that for four months before I cut contact with him. I had just recently told my dad about it, with the event being 3 years ago. He told me not to think too much of it and that I'll have bigger problems. Am I being too emotional? Is it not valid for me to call it a traumatic experience? Am I wrong for feeling like he downplayed my feelings?