Harry Styles and Louis Tomlinson hate each other. They have one of those weird celebrity feuds that is constantly making the headlines of gossip magazines, always has a blurb somewhere on the cover of People. Everyone is always left asking, "What's next?" They know better than to ask when it'll end. To the general public, it seems like the two pop stars have always hated each other, but there's a small group of people who know that's not the case. Actually, they met a long time ago, on a competition show. While Louis was eliminated in the early rounds, Harry made it to third place and his career took off. It took a little longer for Louis' writing genius and angelic voice to be recognized, and he still holds a grudge against the sheer size of Harry's fame. Maybe it's jealousy, but he'll never admit it. While the fact that they were on the same competition show isn't deeper than a Google search, what stays between the two of them is what happened behind the cameras on that show. Louis and Harry both know all too well that there is a very fine line between hate and love, and they've already crossed it once. The question is whether they'll cross it again.