The Best Romance K-drama

Most people think this drama has a bad ending. At the first, when i only read some spoilers i have the same thought with them. But, after i watched the whole episodes my thought TOTALLY changed. This is the first romance drama that contain A LOT of moral value about realationship. The ending is also very reasonable&realistic, this drama teaches me happy ending of the realtionship isn't about 'together until the end'. Young Jae and Joon Young's decision not to return to a relationship was the most appropriate after unpleasant events occurred. RECOMMENDED!