What does the song How To Save A Life by in the Fray mean?

This song was based on when the lead singer of The Fray helped a troubled teen. "You" refers to the singer, and "he" refers to the kid. Some people think it is about being in a relationship. And some think it was about a doctor trying to tell a family member their loved one passed away, but the correct answer is that the singer wrote it for a troubled teen who he was trying to save, hence, how to save a life.