Don’t lie for your friend
If you promise not to tell anyone about your friends’ feelings, you risk your friends’ safety, instead of promising to keep things a secret, tell them “I can help, but I need to involve other people.”
Listen. Really, Listen.
Show interest and support, don’t judge, don’t interrupt, and though it might feel funny not to, don’t give any advice except that you will help him/her through it and get help together. Showing you care is enough. Just listening can be lifesaving.
Stay with your friend.
Go with them to get help from a professional, make the phone call together, or go to hospital emergency room or other doctor together.
Keep things Safe
If there are firearms, drugs, or other means of suicide in his or her house, remove them until the crisis has passed. Make inaccessible anything that might be used by your friend in an impulsive moment.
Take care of yourself.
Helping a suicidal friend is stressful. Make sure you get support: talk to a friend or family member and get good food, rest, exercise, and whatever else you need.