The loss of an old friend can make you reflect on the friendships you have had in your life. It takes time and effort to make old friends.
Friends come and go in your life, and they all play a part in shaping the person you are. But old friends have memories of times past that we treasure.
This article by Genefe Navilon published on ideapod.com talks about old friends and why they matter. It also provides some useful tips on friendship in general and cutting loose toxic friendships.