Seo: oppa! Where are we going?

CS: I wont tell you . Its a secret.

CS drive his car to a park. Then he wake Seo up.

Seo : ah, nice place to have a date with handsome guy. Actually when I was kid my parents always brought me here. Oppa , can you buy me an ice cream? pls. *make a cute face * CS: aigoo. You look so cute . Okay lets buy an ice cream for you.

Chansung buy an ice cream for her and he hug her tightly.(sorry idk how to spell it correctly)

Seo: oppa , are you okay?

CS: Yes im fine

Seo: Then why are you crying? Chansung take a deep breathe.

CS: Lets break up Seo drops her ice cream because she is shock.

Seo: B-b-but why?

CS: sorry i cant tell you the reason why.

Seo: huh?! You wanted a break up but dont want to tell the reason why? ! !

CS: im sorry i cant tell you.

Seo: So you got a new gf?! Okay then. Lets break up!

CS: Im sorry. Wtv it is . I love you . But we cant be together. 

chansung left seohyun alone.

The reason why chansung wanted a break up

chansung went to hospital  to make a medical check up. doctor said that he may got cancer level 1 . so he decided to have a threatment and wont tell anyone abt this except  for 2PM.