Jouna was a girl, but not any girl. She was beautiful but not as the others, with blond hair and blue eyes she was the most beautiful woman in the universe
Pota was a powerful and good-looking man too. He was in love with Jouna. Barry had power too, but not as Pota. He love Jouna too. They didnt have a very good relationship.
Barry was a very jealous god so, as he loved Jouna, he was jealous of Pota.