Love marriages around the world are simple: Boy loves girl. Girl loves boy. They get married.
In India, there are a few more steps:
Boy loves Girl. Girl loves Boy.
Girl’s family has to love boy. Boy’s family has to love girl.
Girl’s Family has to love Boy’s Family. Boy’s family has to love girl’s family.
Girl and Boy still love each other. They get married.
Note: Lines taken from Chetan Bhagat's novel "Two States"