But the strangest and kindest friendship, such as virtually any human relationship, could darken the tragedy for a short time. From it could irrevocably disappear the charm, it can even descend. Good friends make us joyful, but they demand a lot in return. When you look carefully, friendship is a much more confusing and ambiguous sort of connection than you may think. Understand how you last sat in front of your very best friend and felt she knows you well and, above all, really knows you.