Meet Ful (1996)

Kamal works as hotel porter, and meets Dalal, who works as secretary. They fall in love, but they lie to each other by claiming to be descendant of a wealthy family. After marriage, they discover the truth, and search for a rich father. They find what they want in a millionaire who has an idiot son. He accepts them as his son and daughter, without knowing the fact that they are married.