The ongoing drama between Alix Earle and Alex Cooper was rooted in an "ego-driven" conflict that ultimately led to their very public feud, a source exclusively tells Us Weekly. "It was not one isolated incident that led to the feud. There were multiple occasions where Alex made Alix feel uncomfortable," the insider explains. "Alix felt 'mean girl energy' from [Alex] especially after they did the podcast together and didn't think Alex had her best interests at heart.