Nothing will make it better. Painful times. His parents and other family will need support. Losing a child .....no words. Helping them, will help you through the pain. Unexpected death has some value. It reminds us not to take life for granted. No one can guarantee we live another day. Try to celebrate your friend's life, a little laughter between all the tears is not a bad thing.
The sudden lose of a good friend leaves a hole in your heart, the empty feeling that makes you sick. The amount of pain is directly related to how much the person gave of themselves to you and others. It takes time for the good memories to fill the void.
Try to concentrate on the good times. A close friend will send you a message that they are ok. It will probably come in a dream. Don't ignore it. They want you to move on. You will meet again.
Always remember, you are not alone. Many org members are here for you, many want to help. God's speed to you, prayers sent.