Look if they really had a physical relation.. I mean arnav and that lady.. Then they were surely in love.. So they both should have Atleast identified each other's voice b4 seeing each other..
Atleast that madhura .. If that aarav is really arnav ' kid.. They she should ifcourse remember the voice of that aarav's father..
If she really loved him.. She should have quickly recognised it.. Or Atleast she should have a feeling that arnav is near by her..
I dnt think they have any relation except frndship
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