I'm Not For You(2005)

While being chased by loan sharks, Ella hid in an unlocked car. She was caught by Galang and his fiancee, Martha, while they were on their way, which caught Galang off guard and caused an accident. Martha was swept away by the river, leaving Ella and Galang in the car when they were found. Galang's parents, who don't know Martha, think Ella is Martha, while Galang, who has amnesia, doesn't remember who her fiancé is. Will the truth finally be revealed?