1.nani & dadi are childhood friends,they thought of their children's marraige when they are child(arnav's father * mother).
2.Arnav's father fall in love with a girl of low-class.
3.When dadi knew the truth of her son's relationship with that girl,then she forced his son to marry with arnav's mother
4.the girl also married with another guy.
5.After few years arnav's father came to know that his ex-gf died in a car accident.
6.i think he then confessed his ex-relationship in front of whole family
7.hearing this untolerable news,arnav's mom could not take it,committed suicide.
8.Arnav's father loosing his wife & ex-gf left house,noone found him later...
that ex-gf must be khushi's mother as dadi can't tolerate khushi for some unknown reason...
Its completely my thought...If anything else in your mind,please share here.
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