When Ganymede's father, King Tros of Troy or Laomedon, found out about Ganymede's disappearance, he grieved so hard that Zeus sent Hermes on his behalf to give Tros or Laomedon two storm footed horses. In other accounts, Zeus gave Tros a golden vine and two swift horses that could run over water. Hermes was also ordered to assure the bereaved father that Ganymede was and would be immortal. Later, Heracles asked for the two beautiful horses in exchange for destroying the sea monster sent by Poseidon to besiege the city of Troy. Tros agreed and Heracles became the owner of the bribe sent by Zeus to Tros.
Upon hearing that Ganymede was to be cup bearer as well as Zeus' lover, the infinitely jealous Hera was outraged. Therefor Zeus set Ganymede's image among the stars as the constellation Aquarius, the water carrier. Aquarius was originally the Egyptian god over the Nile. The Egyptian god poured water not wine from a flagon.
All of Zeus' scandalous liaisons have allegorical meanings. Some sources say that Zeus' affair with Ganymede was a (religious) justification for homosexuality within the Greek culture, yet others state that this is merely a reflection of Greek life at that time. Before the popularity of the Zeus and Ganymede myth spread, however, the only toleration for sodomy was an external form of goddess worship. Cybele's male devotees tried to achieve unity with her by castrating themselves and dressing like women.
Apollodorus argued that this myth emphasized the victory of patriarchy over matriarchy. This showed that men did not need women to exist, therefor they did not need the attentions of women. The philosopher Plato used this myth to justify his sexual feelings towards male pupils.