A friend has borrowed something small, but high in sentimental value. You've asked for your friend to return the item, but your friend has failed to bring it back. You end the friendship. You don't need a friend who disrespects you and your feelings. You let it go.
Friendship is more important than material items.
You give your friend the cold shoulder until he or she returns your item. Your long-term partner has ended your relationship and you are upset because you wanted the relationship to continue. You stay home every night and cry about the breakup. You decide to make the best of it and find healthy outlets for your feelings. You get involved with someone you don't care about just to be with someone.