I liked it. It was a comedy, but also realistic. It shows four immature youngsters who do very immature things. (Big surprise!) You often want to smack them. No one is a villain here, they take turns being infuriating. She is often manipulating, trying to "train" her lover to be as she would like him to be, but also consistent in her feelings and goals and ultimately most of what she does is to help him too. He, on the other side, is kind-hearted, pure and sincere, but also extremely childish! He's often blind to things clear to everyone else and his lack of self-confidence makes him distrustful and makes him act like a total idiot and a jerk.
But then you understand that yes, inexperienced youngsters can and will behave like this in real life. And they gradually learn their lessons and grow up. But it will take time.
The secondary couple's relationship is also very endeering.
I think that this drama is a useful watch for young people, very educational: it might make them think about how they conduct their own lives and love affairs and maybe, just maybe, avoid some of the pitfalls that the drama characters fall into.