Heeseo is your girlfriend's best friend. He often third wheel your date which makes you annoyed but you don't tell anything. He would glare at you when you flirt with your girlfriend. Your girlfriend does not love you as much as you love her so you thought heeseo and your girlfriend likes each other.

When you dropped your girlfriend at home and she refused to give you goodbye kiss and walked in, heeseo turned to you and mumbled.

"I can treat you better." You prentend to not hear it but that sentence was stuck in your mind.