Your friend needs to get help especially if he is talking about wanting to kill himself. Give him the hotline numbers above, see if he will go to the doctor but if you feel he is in danger then call the emergency services. It's a tough spot to be in, you are a good friend.
__________________
Pegasus
Got a quick question related to mental health or a treatment? Ask it here General Q&A Forum
“Everybody is a genius. But if you judge a fish by it's ability to climb a tree, it will live it's whole life believing that it is stupid.” - Albert Einstein