Buzdil (1951)

Three wealthy siblings; Suraj, Chander and Munni have lost their parents. They are being taken care by their Aunty Radha Bai, who lives with them together with her daughter Meera. Chander and Munni finds an orphan girl, Chandni, while roaming around and bring her to live with them. Kids grow up. Radha Bai wants her daughter Meera to get married to Suraj, to take control of entire household wealth. But Suraj falls in love with Chandni, and so does Chander. Chandni loves Chander but Suraj wants to marry her by hook or crook, which leads him to harass Chandni at the back of Chander. At the end when Suraj is all set to marry Chandni, he realizes his mistake and commits suicide.