It will not be a long review I'll just point what is great about this series.
1) Great cast. Really nice chemistry between all the side couples, main couple and friends. There is no unbearable annoying or dumb characters. We have a villain but even she is not the vocal point of this series and we won't see her on the screen that often. I like this balance. We meet many characters and we learn about them and their stories along the way but they don't overshadow ZX and ZFZ.
2) I like how we can observe the growth of ZX&ZFZ relationship, we can see every stage clearly meeting-curiosity-the birth of the feeling-courting-dating-spiting-heartbreak-rebonding and also facing their fears-marriage. Along the way they grow as a couple and as a people but they stay true to themselves and their characters. I feel that even thou it is a fluffy and bright drama we have many truths about dating and being in a relationship here.
3) I love how this series touched a few very important topics.
- cheating
- prejudice against woman (that they should not be too forward as they would look like they are "easy")
- mental health
- divorce and familial problems
We should have more of this topics in dramas. I love how their flowery relationship and cheerful friendships were able to balance this heavy topics and so this drama didn't feel gloomy but still those problems were't taken lightly and so they felt reliable.

It was a pleasure to watch this series. Was it the best series? No. But I didn't need it to be so. There is nothing that is perfect in this world and so even more I don't expect this series to be so. I had a good time and I didn't have any cringe/frustrated moments that I felt like I want to turn off my laptop. I had a smile for most of the time on my face. This drama made me happy. So if you feel like you need some sunshine in your life I recommend this series.