We're not a Couple!

A handsome couple from an arts high school broke up and became actors, but her ex-boyfriend Seon-ho is a famous top star while Na-eun is an unknown actress… Is this right? Far from being more successful than her ex, she has a reality check and is about to retire from the entertainment industry when she receives a top-tier script. But the male lead in a romantic comedy is her ex-boyfriend? How am I supposed to film a kiss scene with him?!