It's obiviously that Poodith go after Nida because Narin beg him and Narin did that because he knew he can't stop Nida. Like Vanneath said up there.
I find it so cute that when they were at the room after the mother left, Saiparn wanted Poodith to leave but he was like no, i want to play with my child but he left her as she wanted and didn't take hers words seriously. It shows that he understand her, if it was before, he would have yelled to her.
Saiparn keep on pushing Poodith out of hers life because she thought he loves Nida and we all know why she thought so. But i think Poodith also have shows his feeling toward her more but Saiparn doesn't want to see it yet, she is afraid of hurting again simply..
Poodith said things about Napat because of jealousy but he should has know better that Saiparn isn't like what he claim her to be. He need to be punished..lol