This is not the time to worry about what the law will do or won't do with your friend. Like you, he has a problem, and it needs to be taken care of. His parent's denial, though understandable, isn't of any help.

Suicide pacts are just plain bad things to get into. If you are suicidal and someone wants to help you die, they are not your friend. A friend would help you find a counsellor or stay with you. Secondly, suicide pacts often wind up with one person dying and the other living. Imagine living with the guilt that the other person had died.

I know this is a difficult time in your life, but right now, getting help has to take priority over everything else. I can't tell you what will happen to your friend. Alot of it depends on whether or not he has been in trouble before, his drug history and the laws concerning aiding a suicide attempt. That is for him and his family to sort through though. Please stay in whatever kind of councelling you are in.

I know you feel badly about your friend, but before your friendship goes any further, he has to get help and learn how to manage whatever demons are eating at him. Right now, use your family and other friends as support systems and lean on the people who truly care about you. Not the ones that want to exit this world with you. You have too much to offer though you probably can't see that now. Learn from your experience so that it isn't completely wasted, and perhaps one day you will be able to use your experience to help someone else.
Sam2