Achilles and Patroclus. To find out more about Achilles and Patroclus, see this Wikipedia article: link; for information about the image: image source.
Here you see the Greek hero Achilles (unbearded) bandaging a wound on the arm of his beloved Patroclus (older than Achilles, bearded). For an analysis of the visual details in this famous vase painting which is signed by the painter Sosias (circa 500 B.C.E.), see the Perseus website.