The most major speculations are :
1.Either Kushi or her parents was responsible for Arnav's dreadful past and after knowing the truth Arnav and his family will hate Kushi, and Arnav will make her life worst.
My opinion : If Kushi's parents or close relatives are responsible for whatever terrible thing happened in Arnav's family , how can Arnav blame and hate Kushi? She is not accountable for her parent's deeds. Moreover, she lost her parents at the age of 8.
Secondly, if Kushi,( not her parents) is linked with Arnav's past, then also she cannot be blamed for the same,since whatever she did is 14 years ago, when she is a little girl who is less than eight-year-old.
2. Garima or Shashi is linked with Arnav's Past.
My opinion: This speculation is not likely to be true. However, if that is the case,since Kushi is the adopted Child of them, she cannot be responsible for their deeds.
3. Arnav's parents or relatives are linked with the death of Kushi's parents. And when the truth is revealed Kushi will hate Arnav and his family and will leave him.
My opinion : even though Cv's have a tendency to portray Kushi as an immature character at some scenes, when it comes to human relation, she always acts as a Mature lady. So if Arnav's parent is linked with her parent's death considering to the character of Kushi, she will not keep any grudge towards Arnav for his parent's deeds.
4. Either Kushi or her parents is linked with Arnav's dreadful past and after the revelation, Kushi will feel guilty, and she will leave Arnav thinking that her presence will make Arnav and his family uncomfortable.However, Arnav will not let her go .
My opinion : This is more logical prediction. Since Kushi always has a tendency to sacrifice her happiness for others. And it will be good to see Arnav to take Kushi's side .
The above mentioned are the major speculation related to Arnav's past and the consequences after the disclosure of his past.
What I feel is that the viewers will not accept another hate track of Arnav towards Kushi even though she or her parent is linked with his past.
Mainly, because Kushi's character already faced many terrible experiences in her life .
Moreover, Arshi's love story already gone through many obstacles, and it reached to a love track just now, and it is hard to digest a hate track again.
She sacrificed her happiness,dignity,pride for Arnav's family. She was ready to leave Arnav for his and his di's happiness . Besides this, Arnav already explained to his di that he realized his love, and it is tough to him to breath when Kushi is far away from him.
If he hates Kushi for his bitter past, then the telepathy which they had at Kidnap track, the pain he had experienced when Kushi was unconscious after the fall from cliff, the wooing track ,everything will be meaning less. Then we cannot consider his love as unconditional.
Last but not the least , if hate track is true and if after the hate drama, Kushi will forgive Arnav easily and will again lead a life with Arnav, then Kushi's character will lose the dignity and essence. A normal lady in 21st century cannot forgive and trust a man-like Arnav despite all his terrible actions.Whatever he did to Kushi until this moment is out of misunderstanding and in Shyam's case, Kushi is somehow responsible by hiding the truth,but if Arnav punishes Kushi for his past, then it will seem to be cruel. The viewers liked her character because of the smartness,self-respect which she used to have from the beginning. Her character was different from the conventional characters of female leads in the soap serials. So if Cv is particular about the hate track , I wish they will not kill the uniqueness of Kushi.
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