Heads up this drama is not for the weak-hearted!!! It's hard to say what makes this a good drama because it has all the red flags and the relationship is bittersweet. The story is sad, pitiful, and yet beautiful at the same time.
Spoilers ahead......

As you watch episode to episode it gets you to fall in love with the couple but in the end, you know that there is just too much misunderstanding and issues for them to end up together. You may hate the male lead but it's sad because as the drama ends near, you realize he knows it's the end for them and he just soaks up and appreciates every moment he has with her yet you can't forgive him for what he's done. He's a man that falls in love all over and over again. Reliving the misery he sets up for himself yet he does it all over again because of the love he has for her. He lives with regret, misery, and anxiety each time while the girl gets a reset. The ending ties everything up pretty well. It may not make sense but it's the best ending for this story. The happy ending would've been the girl knew the truth about her family, while she was pregnant but again this drama ended differently and it's still a beautiful drama.