One Direction bandmates, once upon a time, used to be the closest of friends and justifiably so as they would spend months together making music and touring all around the world. Amongst the closest of friendships was the one shared between Louis Tomlinson and Zayn Malik or as fans dubbed them; Zouis! They were such thick buddies, that in 2013, Louis and Zayn ended up getting a matching Bus 1 tattoo, symbolising the mad times shared on their tour bus.