The quote "If your friend doesn't hate your enemy, call them an acquaintance" suggests that true friendship is often marked by loyalty and shared feelings, particularly in situations involving adversaries. If a person considers you a friend but doesn't share your negative feelings towards someone you view as an enemy, it may indicate that their commitment to your friendship is not strong enough. Consequently, the quote implies that the relationship is more superficial—more of an acquaintance than a deep friendship—because a genuine friend would typically stand by you in conflicts and share your sentiments about those who oppose you.
Quote By: Dan Savage