Paeng is a rich girl, spoiled brat with no friends and constantly seeks for her busy parents' attention and she is possessive for the people she loves. And she is quite bold = if someone messes with her, she backlashes.
While Arthit is a son of a farmer who has three friends- ling, non and kot. Non and Arthit have a crush on Ling. Non's sis has a crush on Arthit.
Arthit's and Paeng's father are close friends. Paeng's father helps wih Arthit's father debt (52 millionbaht?) saving their farm land. Before Paeng's father's death, he entrusts paeng to arthit's father
Arhtit's home is not a usual one. Arthit's servants sends crude remarks towards Paeng, Arthit's mother takes her servant's stand and doesn't like Paeng either. Arthit's mother only shares half truth with Arthit causing him to misunderstand Paeng. Remember paengs's nature of backlashing, well it makes Arthit misunderstand her more. Paeng is always scolded.
It doesn't help with the fact that Paeng misunderstands Arthit's love for her as one that of a lover, but Arthit only loves her as a "NONG" ( Affection for someone younger as a little brother/ sister).
Paeng is super jealous every time when she sees Arthit with another girl. She bullies Nons sister and gets scolded.
ep 5 Paeng's possessive nature for Arthit is on a high peak where she forces Arthit in bed in ep5 (she is unsuccessful though) and Arthit mets with an accident. He is unforgiving towards Paeng.
So ep 5 is the dividing point for the two protagonists with Arthit's accident, Ling recieving an answer, and Paeng leaving the country promising Arthit's father with a promise (yet to watch)
Paeng's first love is Arthit, while Arhit's first love is Ling. So the first four episodes involves one sided paeng's love.
My guess is As in a usual lakorn mutual love won't commence until ep 10-12( total 19 ep) well lets wait till end of December for that!