I'm sure your friend would be proud of the respect, maturity and dignity you have shown for him following his death. Try to remember the good times, have a drink for him and go on with your life as he would want you too..
I'm not particulary religious, but I feel this sums up a lot.:-
One night I had a dream--
I dreamed I was walking along the beach with the Lord
and across the sky flashed scenes from my life.
For each scene I noticed two sets of footprints,
one belonged to me and the other to the Lord.
When the last scene of my life flashed before me,
I looked back at the footprints in the sand.
I noticed that many times along the path of my life,
there was only one set of footprints.
I also noticed that it happened at the very lowest
and saddest times in my life.
This really bothered me and I questioned the Lord about it.
"Lord, you said that once I decided to follow you,
you would walk with me all the way,
but I have noticed that during the most troublesome times in my life
there is only one set of footprints.
"I don't understand why in times when I needed you most,
you should leave me."
The Lord replied, "My precious, precious child,
I love you and I would never, never leave you
during your times of trial and suffering.
"When you saw only one set of footprints,
it was then that I carried you."