4 Colors Heart (1989)

Wiphawee gets a job as a nanny to Watchara’s kids. Pongnarin, her best friend, doesn’t want her work this job since they have to be separated but they promise they will send a letter to each other. When Wiphawee starts her job, she realizes Watchara’s family problem and his kids doesn't want any nanny. Without recognizing, the proximity between Wiphawee and Watchara becomes the love. In the last, who does Wiphawee choose between Pongnarin who’s willing to do everything for her and Watchara, the widower who she feels good to him?