Answer:
I would kind of cry.. I mean sometimes I see crying as a sign of weakness ( its natural for me to think like that ) I would think about the times we spent. I would probably be depressed for some time ( that time will be a lot ) but Ill keep my heads up cause I know Ill see them in the other life. If they died by their own will. Ill investigate why but Ill probably be sad for a while-
I dont know since I have never experienced my friend dying but many people left me so I can kind of transition it.
I hope this helps!