Deceiving Love (2019)

Neerapa is a plain looking woman that has a charming smile. She's dating Jarinthorn, a handsome smart guy who's the only son of a general. They're planning on getting married soon. One day, Neerapa suggests that he should apply for a job at Tippapa's company. She is Neerapa's best friend. Jarinthorn gets a warm welcome from Tippapa's family. Tippapa falls in love with Jarinthorn after they start working together. He still loves Neerapa but he decided to be with Tippapa for stability since she's wealthy. Neerapa is hurt after hearing the news that Jarinthorn and Tippapa are getting married. Her family and Patcharapol, Tippapa's cousin, try to comfort her. Patcharapol is in love with Neerapa but she was in a relationship before. Now that she's single, this is his chance. (Source: MyDramaList)