Majurat See Nam Pueng(1993)

To honor a family promise, Rojanasnai is forced into an engagement meant for her younger sister, Romereuthai. Out of gratitude for her adoptive family, she accepts, despite knowing the groom, Paat Pathamakul, believes he was deceived. Wounded in pride, Paat treats her coldly, declaring their marriage only technical. But as she quietly endures his torment, emotions begin to shift. Can a union born of duty and misunderstanding turn into true love?