He trusts everyone.
He trusted his mother.
He trusted his relationships.
Now he is trusting Kangna. Perhaps he thinks Kangna is someone like him, an orphan. That is drawing him closer to her.
But smartness does not pay. Like Kalindi realised. And Vipul realised. Vipul came out smarter in confronting Kangna and paying the price for it.
Only a son cares for his mother. While the others did not do anything about Kalindi, only Vipul phoned all her friends and was disturbed at her absence.
We all fought about Madhav and his calling papa. Now both the fathers are not connected to him anymore biologically, it seems. Well, who can be his father? Some terrorist harmed by them? Their home is sheltering terrorist's kids. Well, the kids are innocent.