Zayn went because he’d had enough. Have you ever been on the road for four years? These guys aren’t at home. “There is no way the same thing is going to run through all five guys, that they’re all going to want to be on the road so much together. Eventually he got to a point where he’d had enough. “It was, ‘OK, I don’t want to be in this band any more’. It was that simple, it was human instinct kicking in. People want it to be complicated and have secret reasons but that is what it was.” x