Eventually, due to Demeter's anguish, the plantlife all over the world began to wither and die
Meanwhile, Persephone came to realise that Hades was actually a nice guy and was just lonely. She knew that is she ate any food in the underworld she would have to stay there, so she avoided food at all costs, even if she was tempted by the fruit Hades would gift her.
Eventually, Demeter found out where Persephone was and demanded that Hades let her go.
But as Hades gave Persephone up, he offered her one last gift. A bright red pomegranate.
Persephone took the pomegranate, and looking Hades directly in the eyes ate six seeds from the pomegranate, trapping her in the underworld for six months of the year so that she could stay with her love and spend time with her mother.