Mohabbat Isko Kahete Hain (1965)

Vijay and Rajni have been childhood sweethearts in a small town called Rajgarh. They did separate for a few years when Rajni and her maternal grandma, Leela, went to live in Calcutta. When Rajni returns, fully matured, both rekindle their romance, much to the chagrin of Kundan and his mom. Kundan's mom creates all kinds of misunderstandings between Vijay and Rajni, and Vijay's conduct, especially gambling, lying, and telling tall stories, does not help. Then Vijay is arrested by the police and held in jail. When he is discharged, he swears to turn his life around and be worthy of Rajni, leaves Rajgarh, finds employment in Durgapur as a truck driver. When he returns home he finds that Rajni and Leela have re-located to Calcutta where Rajni is to be married to a man named Ravi Shankar. A heartbroken Vijay goes to Calcutta to locate Rajni, but is unable to locate her. He falls into bad company, takes to alcohol, and then one day one of his new-found friends' abducts a woman - who turns out to be Rajni. When Vijay and Rajni come face to face there is nothing but hatred between them. Rajni walks out of Vijay's life. When they meet again in Dhanbad, Rajni is married to Ravi Shankar, who lives there with his sister, Manju. Watch what happens when Vijay re-enters Rajni's life and the reaction it has on Ravi and Manju.