"Ok, She is the daughter of Zeus and Demeter, goddess of the harvest. Persephone was such a beautiful young woman that everyone loved her, even Hades wanted her for himself. One day, when she was collecting flowers on the plain of Enna, the earth suddenly opened and Hades rose up from the gap and abducted her. None but Zeus, and the all-seeing sun, Helios, had noticed it.
Demeter, her mother, was very sad and wandered looking for her, and wouldn't let anything grow, until Helios found her and told her where she was. Zeus sent Hermes down to Hades to make him release Persephone. Hades grudgingly agreed, but before she went back he gave Persephone a pomegranate. This meant that she would always return to him.
If you share a pomegranate with someone, your showing your devotion, a few seeds, and you just want to, well, Persephone was a fertility goddess.. a whole pomegranate, and its a sign of devotion."