Zayn never thought how fast a single phone call can connect him to his past. But to be honest he was scared, because Zayn doesn't know how to deal with it. He honestly doesn't know how to save Harry when he is barely floating above water himself . But he can't just leave him. He can't just leave Harry to drown again. So, he will try ,until he can't and maybe that's why he is here at Harry's place with a bag full of his stuff. Because even if he will have to leave later on, he will bring back Harry from the Dark side of the moon.