Further to my last post, I'll just add that he's going to want to vent all his grief onto you. He'll most probably just talk and talk like he can't stop. Just let him go all he wants, just soak it all up. From experience, it's like he's in a storm at sea, emotionally; he'll want you as a rock to anchor to.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'