How about this idea?
You should know what his interests are, and engage with his interests.
For example, (in my case) I am into geography,history,politics and languages) so being able to talk about Antananarivo(wohoo I spelt it right!), or the history of the Zimbabwea Bush War, or why apartheid existed, or teaching him Swahili (Yes, we got a trend here) should help!
Make him feel worthwhile and sit with him and let me cry and laugh and whatever other emotion he feels. Remember not to judge or criticize. Just let him be himself.
Tell him about college if you are old enough to have went. Tell him all the wonderful things in college!