Purab Aur Pachhim (1970)

Bharat is a patriotic Indian who's father was an Independence fighter He goes to London and is disappointed to see that the NRI's staying there criticized everything Indian and were wasting their life away. Prithi(Siara Banu) is one such NRI who falls in love with Bharat but refuses to go back to India with him. rest is the movie hoe he changes her