Ganymede was a very handsome prince of Troy. King of the gods Zeus fell in love with Ganymede and transformed himself into an eagle to abduct him. Zeus then carried Ganymede off to Mount Olympus.
Up in Mount Olympus, Ganymede became the lover of Zeus and also served as a cup bearer for the gods, chasing away the olympian servant and daughter of Hera, Hebe.
Zeus wife Hera was very jealous of Zeus' affair with Ganymede, but since she couldn't do any harm to Zeus himself, Hera took revenge by abandoning the Trojans during the Trojan War.