thats just unbelievable.... Live is hard and cruel at times, and some people need the help to overcome such a very, very bad case of depression.
What is there that you can do? All you can do is keep this event deep down in your mind and move on. Never forget....
That's... that's pretty heavy man, my condolences. Life takes the most unexpected turns sometimes, but you got to be ready for them, stay strong man.