You and Zack are childhood best friends your parents died long ago and then zack's parents adopted you, since then you and Zack became unseprable, one day you and Zack were talking naturally when Suzy a normal class mate walked in and included her self in the conversation, Zack rolled his eyes and leaned back not talking anymore he acted coldly when other person interfered the conversation he had with you, he then glanced at you and said "let's leave..."