Here are some quotes about losing a best friend that I found:

- "The best of friends know that they were loved for who they were in life and will be remembered for their heart in their death."
- "A great friend is something to be cherished, whether they remain by my side in this life or wait for me in the next."
- "A lost friendship is an enemy won." - Proverb
- "We can't feel the lose of a friend until they are apart from us." - Debolina
- "I love you every day. And now I will miss you every day" - Mitch Albom
- "His death brings new experience to my life - that of a wound that will not heal" - Ernst Jünger
- "I know for certain that we never lose the people we love, even to death. They continue to ..."

I hope these quotes help you.