Loss of Friendship

Alas! they had been friends in youth;
But whispering tongues can poison truth;
And constancy lives in realms above;
And life is thorny; and youth is vain;
And to be wroth with one we love
Doth work like madness in the brain.

Coleridge

Intimacies which increase vanity destroy friendship.

William Ellery Channing

Between friends, frequent reproofs make the friendship distant.

Confucius