You and Zach go to the same school, you have been best friends with him until something weird happened

a girl came and took Zach away from you which made you jelous, Zach was arrogant , selfish and a player

you decided to let him live his life until one day everything changed..

Zach bumped into you and you tripped, “watch where your going!” Zach said , he then leans closer and speaks “I know you”