Up in Smoke (Ziall)

Zayn Malik had a reputation to keep and Niall Horan had no intention of interfering with that. However, when Niall is signed up to tutor Zayn both their worlds come crashing together. Zayn's not sure how he let it happen but suddenly the thing he feared most is the only thing he needs and Niall is just trying to figure out how the hell his life got flipped around. Neither one's sure how everything has gone up in smoke around them but suddenly all that's left is each other. (One Direction)