Bridgie,
Thank you so much for your answer. No, there was no therapy and looking back that is one of the possible reasons for the attempt. Yes, it is going to a long difficult road. I am most concerned about trust issues. How will I be able to believe him or trust him, if he can't tell me about wanting to die?

What may have been depression has now turned into a full blown episode of who knows what, and yes the not knowing is the hardest part. I do understand that his age impacts this greatly. I am no long technically responsible for him or his actions.