Friendship is closely tied to loyalty and is tested often in Great Expectations. Friendship is not found to be indestructible and immune to human folly. Friendship quietly and gradually disintegrates when wealth and social are introduced. Characters who are obsessed with their future often forget the past and the relationships that dwelt there. Loss of friendship and betrayal wounds the protagonist.
Friendship fails if you don’t love yourself.
Loyalty is usually harder than self-preservation.