Ever since Homer, writers have had trouble describing the bonds that exist between friends. But if film and TV can focus on friendship, why can’t books?Patroclus is like a brother to Achilles, wrathful hero of the Greeks at Troy, and the other half of one of literature’s greatest friendships. When Patroclus dies in battle, wearing his beloved friend’s armour, Achilles laments – Homer tells us in another familial simile – like a lion who has lost his cubs. Related: The best eight young adult books – and why grownups should read them, too Continue reading...