What is going on with Jack and Ralhp relationship?

Their relationship is under constant breakdown since the beginning of the novel. Jack will have nothing less than total power. Jack uses his powers of manipulation to constantly attack Ralph's credibility and leadership. In Chapter 5 Jack threatens Piggy and Ralph intercedes once more, complaining that they are breaking the rules. When Jack asks, "who cares?" Ralph says that the rules are the only thing that they have. Jack says that he and his hunters will kill the beast. Jack is able to use both mocking Piggy and their collective fear of the beast to slowly take power away from Ralph.