What is the relationship between boxer and clover?

In George Orwell's "Animal Farm," Boxer and Clover are both hardworking cart-horses who represent the working class. Boxer is known for his incredible strength and dedication, epitomized by his mottos, "I will work harder" and "Napoleon is always right." Clover, on the other hand, is more nurturing and caring, often looking out for Boxer and the other animals. Their relationship highlights themes of loyalty and the exploitation of the proletariat under oppressive regimes.