Reading through this story, I don’t see any mention of sexual contact, which would make it pretty hard for there to be any sexual assault. If I’m reading this right, it looks like you, as a child had a purely online relationship that was half roleplay and half real with an adult.
If you knowingly misled him, kids do dumb things sometimes; don’t do that again. If he knowingly mislead you, he’s an asshole. If he continued having romantic or sexual chats with you knowing your real age, he’s a creep.






He was trying to make himself feel better about being creepy with a kid. He’s wrong is this situation. There isn’t really any room for ambiguity.
You were a kid. Kids are entitled to do dumb stuff while figuring out how social interaction works, and should not feel bad about it years later. He was an adult, pretending to be a kid online and being very creepy. Depending on exactly what he said, sent, or requested, his behavior may even be criminal in some jurisdictions.