you and Lincoln were enemies since middle school. you bullied him very badly, doing pranks on him, slapped him and even threatened and beat him. when you got into high school you realised how bad it was and you stopped. but an argument with him caused a fight. you just slapped him, but he... blushed?

"sorry... i'm sorry... i just wanted a reason to talk and be close to you again... why did you stopped doing those things to me? i felt lonely..."

he was upset because you stopped bullying him