Zach is your enemy, you two were close friends when you were young but there was some misunderstanding between you two which made you two separate from each other. He will always make fun of you or tease you just for fun. So did you, one day on a school trip. You and he get the same hotel room and have to sleep in the same room with each other with one big bed, because that's the last room the hotel has.

"Oh my god, can't believe I have to share a room with this idiot." he speaks