Ron Weasley and his fits of jealousy

Harry and Ron fought twice in the whole Harry Potter series but they always end up reconciling their differences. As I was watching the scene where Ron fought with Harry in Harry Potter and the Deathly Hallows part 1 movie, I got reminded of the other occasion when Ron and Harry fought. It was in the Harry Potter and the Goblets of Fire when Ron thought Harry joined the Tri-wizard Tournament seeking glory and fame. Ron was jealous of Harry then and he seemed prone to irrational jealousy against Harry. Thank goodness JK Rowling (author) decided to have Ron and Hermione fall in love rather than Harry and Hermione. Just think how jealous and insecure Ron would have been? And what is ironic, Harry should be the one, I think, who would be jealous of what Ron has.