This drama was the best K drama I have viewed in the past 5 years.   It had entertainment value but more importantly, its value was its vicarious desire for the viewer to reevaluate the life and decisions of each character presented throughout.  When you have lived a long time -- and if you have been married or consider getting married this drama is love 101 or a refresher course.   It was fun for me to watch with my husband of 28 years who was also a cat owner (multiple cats).  I've never understood his personality but watching this drama made me reflect a lot about life.  The balance of the 3 couples, the parents, and the additional character s - ex-boyfriends, girlfriends, potential liaisons, and expectations were weaved into the story in an organized way with resolutions and no loose ends.  The ending was perfect.  What I enjoyed along the way was the music -- it really was suited to the scenes and had added dramatic effect.  I have already some of the episodes twice.   A very good drama and one that is worth the time viewing.