Jawani diwani (1972)

Madhu marries Ravi Anand, the son of a mere employee in her Thakur brother's household, and this results in her brother breaking all relations with her. Madhu moves in with Ravi, and his younger brother, Vijay. Years later, she gives birth to a son, and attempts to reconcile with her brother, to no avail. Then Vijay meets Neeta and both fall in love. Little does Vijay know that Neeta is none other Thakur's daughter, who has already been promised to Benny Sinha.