Jocelyne, I am so sorry for what you are going through.
My heart breaks. I didn't want to mention it because I in no way want to take anything away from your important grief and intense relationship with your friend, but I also recently (this year) lost one of my best friends of more than 40 years. I knew him since I was six years old and have always been close to him. He died of complications of COPD in Portland, OR where he and his wife had been living for the last 10 years. He was really the only person I could talk to about my darkest stuff because he knew me so well over my lifetime and truly understood me like no one else. I can't write about that more, not one more word...
I just want you to know how much I really understand what you are going through right now, not take from your situation. I am commiserating only and want you to know I have been thinking about you a lot lately and what you must be feeling. I wish I could hold you and make you feel loved in this moment.