Is the guy next door my ex-boyfriend?

prolog.

전정국

Let's... break up...

은여주

what?

전정국

Let's break up...

은여주

What did I do wrong?

전정국

No... it's my fault...

은여주

I will forgive you for everything....

전정국

No... it's because I can't forgive.

은여주

Are you serious about that? That you want to break up...

전정국

Yeah... I'm serious...

은여주

No regrets... right?

전정국

......

은여주

Don't you have any regrets?!

전정국

uh....