Okay, fine. Play coy if you want to, Zayn. But riddle us this: Do "good friends" use one another's faces as their iPhone wallpaper ? Do "good friends" giggle romantically ? Do "good friends" celebrate each other's birthdays with first-initial bling ? Do "good friends" manhandle one another's pets half-nude In all fairness: yes. Sometimes good friends do all of those things.But do "good friends" pose like this in Polaroid selfies that will eventually be shared to Instagram?