As a result of Cupid's arrow, Hades falls in love with Persephone (who's mom is Demeter).
(grumble) fine (grumble)
eat thes seeds
Hades kidnaps Persephone and takes her to the underworld. She is forced to stay.
Demeter, the goddess of harvest who controls the seasons, is sad because she misses her daughter so she makes eternal Winter.
Sent by Zeus, Hermes, the messenger God, saves Persephone by coming down from Olympus to free her from Hades. However, she has to stay because she ate pomegranate seeds that Hades forced her to eat.
Zeus makes an exception to the pomegranate rule and Persephone gets to be with Demter half the time and Hades half the time making winter and fall when Persophone is with Hades and spring and summer when Persephone is with Demeter. BAM seasons!!