I want to say this is just my opinion ...
to be honest i wasn't sure i wanted to continue watching this when i first started it. Hae-in whole i don't care attitude was just really annoying and too much for me. How she could just treat her husband Baek Hyun-woo the way she did really got under my skin. But i really like to give everything i watch a fair opportunity because they all end up getting good. Which happen exactly lol. The more i watched and the more the story went on seeing how vulnerable Hae-in became, seeing how she really cared for him along with the little cute things she did I really started to enjoy. I'm not going to lie it made me cry a little bit of happy and sad tears, seeing there relationship progress and really go through so much to see how it ended was a fresh of breath air and just sweet. Just wanted to share my thoughts...I highly recommend.