I actually think that Poj was a little more stubborn than Chai Klang was in this fight. Though he was stubborn, at least he explained his reasons.... that because she chose to listen to others, she would torture herself and torture him, and this stubborn method that she wants to use with him won't work and that it's better if she uses other more lovable methods to win over him. But the good thing is, he actually took his own advice because he tried to win over her stubborn-ness by being as lovable and attentive as he could with her....I remembered in the scene after he told her to go get dressed so that he could take her out and he says to himself, "let's see how stubborn you can be".....Haha!!
And then there was that scene when Poj asked him if he needed to know anything about her giving money to the mystery man and he says he trusts her and reminded her that besides her father, she has him that understands her most and he was like, now that you know how I feel, "I want you to come to me, tell me that we understand each other and are no longer mad". Poj says that she wasn't mad at him and he says, "you're not mad, but you threw the key out of the window"........Haha!!! Yeah, so I do think Chai Klang made the first move to get pass their argument and he had hoped she would invite him in after walking her to her bedroom, but Poj's pregnant so she makes an excuse to go to bed.....Poor Chai Klang, I could see his heart drop at this moment.
Awe, but this is so Chai Klang. He was always trying to teach Poj life lessons. He wanted her to believe in him just as he believes in her. The only problem is, he doesn't understand a woman's need to hear her beloved say "I love you". He really thought she could see it through his actions that he loves her.