Friendly Enemy/Theatre

Examples of Friendly Enemies in Theatre include:

Cyrano De Bergerac: Cyrano and De Guiche: De Guiche wants to humiliate Cyrano and even prepares a Last Stand for him. Cyrano doesn't waste any chance to really humiliate De Guiche. Meanwhile, they have civilized conversations, they treat each other with the utmost respect, they both have read Don Quixote and discuss it, and De Guiche is the only one who really comprehends Cyrano's motives.
- And at the end, De Guiche even expresses envy for Cyrano's independence and tries to pass a warning to him of a coming assassination attempt. It doesn't help.
Fiddler on the Roof: the constable and Tevye. Despite one being a Cossack and the other being a Jew, they both show respect to the other and treat each other well, having a friendly chat every once in a while. When the constable receives orders to perform a pogrom in the village, he is obviously uncomfortable with the idea, and even warns Tevye in advance out of respect for their friendship.