Libulan

Right
This and RL is the only show I find the actors have more chemistry off screen and the only shows where I got obsessed

I think you could not pick up on the nuances the story was trying to give so lemme explain it to you
In 1st episode when Qin basically said try to win me over then, it was him giving green light to Duang to pursue him publicly and 2nd episode Jamie and Pae do remind Duang that if Qin is uncomfortable then it is stalking but Qin clearly says he's not uncomfortable with whatever Duang is doing to pursue him.
Qin hasn't changed expression even once, this one is making me laugh cause the he literally smiles a lot in later episodes and showed emotions like fear, insecurity, anger, jealousy, surprise, etc. which you couldn't catch, maybe?
Duang on the other hand is supposed to be a golden retriever and is constantly called a puppy even by his friends, so his character is supposed to give off that energy with underlying emotions like fear, sadness, anger and so on.....

Maybe because the second couple had just became a pairing when they shot and could be shy or less comfortable with kiss scenes (Just my opinion), cause I heard JamieMarvis scenes were shot later on after they became official pairings

His expression and eyes in the episode where Duang sings is also one of my favorite, there was a hint of fascination and liking towards Duang

I really love how we've shifted from Duang to more of Qin's POV now and upcoming episodes will delve more into his POV

Same here, maybe I sounded a bit too straightforward

I think Qin did say your looks got on my nerves in the drama and I did say he noticed Duang for his kind nature as well
Maybe as you said Duang's loud and boisterous nature may also have intrigued Qin cause they were total opposite of each other
It may have been a little bit of all these feelings
I just wanted to clarify that Qin most probably was more curious and admired Duang rather than having feelings for him

Actually Qin did not have that kind of romantic feelings for Duang when they were in same tutoring class.
Qin more like admired Duang for his kindness (dropping off female friends t station, buying them pads, etc.) and was noticing Duang a lot cause of his good looks (He even said his looks annoyed Qin a lot). So Qin was flustered when he saw that same boy he looked at looking at him now and maybe gave him a chance to court him cause he knew how Duang was in a way

There are some things that haven't been properly addressed and the director even said that Qin's POV still has some things to be resolved, so yeah there is a reason why it's 12 episodes cause we still don't know what those episodes have.