My Stubborn

Sorn and Juin work together at the same company, but they often argue and play pranks on each other. However, their relationship takes a turn when Sorn rescues Juin from a tense situation at a bar.

Sorn offers to train Juin in the ways of intimacy. Juin agrees not to practice with anyone else until his training is complete.

Juin drinks heavily at a bar with Piang, confused about Sorn. Franz tries to kiss drunk Juin, but Sorn stops it. Sorn claims exclusivity while teaching Juin. Later, Sorn defines their relationship as purely physical.

Sorn demands exclusivity from Juin but flirts with Penny, confusing Juin. Sorn shows kindness by driving interns but also plays office pranks on Juin, causing trouble with P'June. Champ tells Tai about the pranks.

Sorn apologizes to Juin for the pranking at the meeting and causing him to be scolded by June. But, this time, Juin is not as quick to forgive him. Hia Thai is finally back and Champ is more than happy to see him.

Sorn feels jealous when Jom drives Juin home after Sorn's date with Penny. After ending things with Penny, Sorn promises daily breakfasts with Juin. He's jealous of Jom and Phut's closeness to Juin but becomes more accommodating.

Sorn breaks up a fight between Jun, Phut, and Vee by claiming Jun's neck marks as his own doing. Sorn invites Jun to his hometown and introduces him to his family. Nu, Sorn's brother, drags Jun out to drink moonshine with the oldies.

After a day at the fair, Sorn gets jealous over Jom calling Jun. Sorn runs into Mali, his ex-girlfriend, which reminds him of why he doesn't date kids. Penny has a fever so June takes care of her.

Jun and Champ both get frustrated at Sorn and Tai's lack of clarity about their romantic feelings. Jun disappears, refusing to answer any of Sorn's calls.

With Tai and Penny's help, Sorn finds Jun at the factory and attempts to win back his heart. He tries a softer approach to courting.

Jun hears that Sorn is sick and goes to his house to check on him. After cutting off their undefined casual relationship, Champ gets flirted with by Tos, the arrogant new hire.

Seeing Champ with Tos inspires Tai to finally make his feelings clear. Jun and Sorn visit Jun's family's restaurant with the intention of revealing their relationship.

While dating Sorn secretly, new RT Design employee Juin starts online product reviews during Sorn's work trip to Japan. His growing success attracts unwanted attention from a flirtatious brand owner.

Jun is anxious that if he doesn't do enough for Sorn, he won't want to marry him. On their anniversary beach trip, he overhears something from Penny and Jun that confirms those fears.