k, Your h didn't feel comfortable in discussing the issues w/you. I sense he didn't go into great detail w/you what transpired. Discussing the issue at length would take him back and make him relive relive the pain, hurt, and disappointment. He wasn't and isn't ready to deal w/it just yet. That is the main reason he is in crisis and at some point, he will need to face what transpired and come to realize that he was just a child and wasn't at fault for what happened to him. Many will speak to the offender(s) who stunted them emotionally to try to better understand what transpired. The mlcer needs to learn to forgive themselves and those who have hurt them.
As to whether or not your h will heal w/o speaking to his parents, I would say he has a 50-50 chance. It will depend upon him to figure out what he needs and wants to do about the feelings he's stuffed down all of the years he has carried the pain, hurt and disappointment. If he doesn't speak to them, he will always wonder about that time in his life and question what he could have done differently. I would hope that he would feel safe and comfortable at some point to talk to them about it, but he may not. He may need to seek out a good "C" to assist him in walking through the land mines of his memories to help him better understand his feelings. Time will tell how he will deal w/those "ghosts of yesteryear".