@Lustdrama - Neither of those. Nai is not a bad person, but he is manipulative. The thing with Nai is that he spent the entire drama saying he loved her, wants to do the best for her, wants to be a family with her etc, etc. Those are some heavy promises over many months in the timeline of the drama. When she makes a mistake that hurts him, they both say things they don't mean. And when, after she wanted to keep the baby and be a family with him, he suddenly decides to turn cold and take the baby away? Sure dude, your promises and love are worth gold. I'm hoping he lives up to our expectations of his steadfast love though. He loved her since they were kids, so I don't think that can turn sour. I Love Nai!
Let me be clear though - as of writing this, 2018/08/08, I have not watched the last two episodes aired on the 6th and 7th, so I don`t know how this ends. I'm still of the mind that that first scene in the first ep was a dream or a ploy by Nai that makes Nok realize she really wants a family with him. Honestly, with the main leads' hot tempers coupled with their `game`, this show was an emotional mess - kind of like Nok. LOL.
By the way, the book and the drama are totally different, so we can't really talk about the situations as if they were the same. They are totally not. It's wrong and confusing to compare the two as if they were 1 story.