Long Thang Rak (2004)

Long Thang Rak 2004 / หลงทางรัก 2004 / Lohng Tarng Ruk

Thiu lives in the countryside with his three kids, who are actually the children of his older sister. Loelaksami is a self-centered hi-so city girl who finds herself pressured by her mother to marry a rich older man she strongly dislikes. Unbeknownst to Loelaksami, her most trusted servant is having a secret affair with the same wealthy suitor. A chance encounter brings Thiu and Loelaksami together in the city when she attempts to escape from her unwanted fiancée. Unfortunately, a sudden accident leaves her with amnesia, erasing her memories and identity. Thiu saves her life and takes her to his countryside home, where they start living as husband and wife, with Loelaksami genuinely believing the three children are her own. But their life doesn't go so smoothly as Loelaksami's persistent fiancée discovers she is alive and sets out to find her. (Source: asianfuse.net; edited by msbrightide at XuongPhim)