Louis has a lot of friends but he's by far the closest to Harry. The two boys been best friends since primary school and have remained very close since. When Zayn randomly blurts out that he thinks that Louis and Harry like each other the two of them just dismiss Zayns "theory" but it makes Louis start to think. Does he like Harry more than just as a friend? Who knows, maybe they'll end up together after all? I guess you'll have to read and find out.