Zayn is Niall's older brother's bestfriend. Zayn had always been their for both boys. When ever Niall's bother was unfair to him, zayn would be there for Niall. Thier relationship was a always platonic. Until one day it's wants.
Niall and Zayn are madly in love with one another but they're in the famous band called One Direction, which makes boyxboy sort of complicated. However, they are determined to make ZIALL last. (Sequel to More Than A Lifetime)