Aavishkar (1974)

Amar and Mansi are in love, and decide to get married. They do so, and still continue to be in love. They get to their first wedding anniversary, and decide to hire a taxi-cab for a day, just to drive around and have fun. Thereafter, to their joy they are blessed with a child. But then their bliss is cut short, when Amar starts work with his advertising agency, which grooms beautiful young women, to further their careers as models, and both cannot stand each other anymore.