We can't fix the past or anything. He is already depressed and suffering. If he can get through this, he will be an adult at a young age. He was in more pain than the kids his age. And The only way is therapy. He is very strong and he still wants to live knowing that he has lost his future and his childhood happiness.
Don't scold him for anything. He's just curious for his age and he's too smart, not realizing that he's smart in the wrong way. He's still just a kid. A kid who are in more pain than anyone else.
Don't call him disgusting, please.