It’s a nice rom-com. The plot is really basic but it works as it is.
What I liked:
- until episode 6 or so the story and dialogues were really funny.
- the main couple chemistry is nice too... they have cute moments together.
- Their acting is good too. I found better So Ji Sub here than in Masters Sun and for Shi Min Ah, as it was the 1st time I saw her, I liked her character in here, a strong woman able to do everything she decided to.
- the bromance among the main leads and the two “kids”.
- the idea that losing weight is for health reasons (and not because you boyfriend has dumped you).
- there were no many tropes, and some of them were completely inversed (like Joon Eun and the grandmother). That was cool.

What I didn’t like:
- the “your body is mine” part. Even if it’s obvious that for unknown reasons the main male lead is interested in the female lead almost since the beginning, at the end I had the feeling that for him, the fact that she continues to be slim and pretty was far too important in their relationship.
- the second couple: it doesn’t add anything to the story and overall the second male lead, his behaviour is not coherent. The second female lead acting is no so good too...
- the main male family’s. There’s no explanation, no development...
- the last two episodes. They were unnecessary to finish the drama. And they have two many flashbacks.

So... if you want to watch a nice room-com, to motivate yourself to see the positive way of life and to take determination to do something for you (as lose weight). This is for you!