Unexpected and Disappointing Ending

I can't believe we waited 16 Episodes for nothing. She's not normal and he waited the love he held for her in his heart for too many years. I have never been ao dissappointed in a Kdrama before. What was the point of the story? Both men deserved better treatment and gave up in other opportunities for the "hope" of being with the one they love.
I would not recommend getting emotionally involved with this drama.
I loved the actors and would definitely want to see them in more series. I hope with a better ending