Trying to remember old hindi movie- manntries to commit suicide, saved by a rich man. Told tobwait 1 month before second suicide attempt

I saw this movie on Doordarshan back in the 80s. Don't remember the cast. In the story, soon after the rich man saves this young boy from suicide, they find a girl running from her family who meets with an accident. The rich man brings her home thinking she is homeless but turns out she is from a rich family. The boy and the girl fall in love. After the month is over, the rich man says that it is time for him to finish committing suicide. He takes a car to drive off a cliff but cannot as he is in love now. One scene from the movie I remember is when the girl is brought home and served dinner, she is starving and jumps into the food. It is all western food and the boy keeps asking the names of the dishes. The girl blurts out the names as she devours the entire dinner. This reveals her to be from a rich family. Anybody know the name of the movie?