How to hate my EX

"Sometimes love may have walked past the word 'goodbye' but the heart never chose anyone else but you."

When Key(Meen) and Namkhing(Amee) two people who once loved deeply but talked less are forced to reunite on a trip they never planned to take together again. Between memories they can't forget and feelings they can't hate... When "I miss you" was never said, and "I'm sorry" never came. Are they still in love or just not over the pain?