The relationship between Achilles and Patroclus is a key element of the stories associated with the Trojan War. In the Iliad, Homer describes a deep, meaningful relationship between Achilles and Patroclus, where Achilles is tender toward Patroclus, but callous and arrogant toward others. Its exact nature—whether homosexual, a non-sexual deep friendship, or something else entirely—has been a subject of dispute in both the Classical period and the modern era.