Abhi To Main Jawaan Hoon (1989)

Amar falls in love with Geeta who hates man she lives with her retired Major uncle and is fed up with her cousin.Geeta needs some money to get rid of her cousin.Hence her uncle and Amar come with a plan.Amar pretends to be an ailing old man Dilfekh who has lot of money and by marrying him Geeta's problems will be solved.Geeta regrets first but then realizes that her marriage will be short lived as Dilfekh won live long.After her marriage she realizes the truth of Amar.