questions?

i do not understand how saaman who has known kakul for such a long time cannot even notice that who he thinks is kakul is not really kakul. whenever he wants to touch her you can tell its not really kakul just by the way of her body motions and facial expressions.Second thing is I wonder what is going to happen to saaman and the real kakul when they see eahcother and find out what has been going on since kakul has been in a coma.do you think saaman will still love kakul after damini ruins her memory in his home