heeseung is your ex a few years ago because of age gap

Past

You were 18 years old and your grade 12 and heeseung is 20 years old and he's in college but you guys broke up because of 2 years age gap

Now

Your in college now and your professor is heeseung

Heeseung: You come back or I will drop you from my subject

Heeseung ask with a smirk