Miss Sincere and Mr. Good Guy(2004)

Miss Sincere and Mr. Good Guy is a Thai romantic comedy built on a case of mistaken identity. When San Dee spots Jing Jai in an expensive dress—accidentally swapped with an actress's—and later admiring a costly necklace, she assumes Jing Jai is wealthy. Jing Jai draws the same conclusion about San Dee. Their mutual misunderstanding sets the stage for romance as they navigate life under false pretenses. The plot thickens when a wealthy family enlists San Dee's help to locate their missing only child. As the search unfolds, the truth about everyone's real circumstances threatens to unravel, forcing both leads to confront what they've built on deception and discover what matters most.