I don't think she was trying to protect RK.. But I didn't see how telling Sultan that he is not related to RK would put RK out if danger.. It was not like Sultan has fallen for Madhu and so he is trying to harm RK..
It was a clunky way to let Sultan know tat she is single!! And no matter how much I adore Madhu, it's high time she learns to mind her own business. She saved Aryan that day was commendable, but I don't see why she keeps giving lessons on parenting to Sultan and today's lecture was terribly annoying.
Why didnt Sultan ask Aryan that why she called Madhu and did RK know that he was talking to kid?? NO!
The nitwit he is, while telling Madhu not to tell her husband about where she spent the entire night. Dude!! U r indian and have been a husband!! He didn't know their background and saw RK waiting in front of the chawl and looked every bit a concerned husband. But he wants to stay anonymous, so threatens madhu to stay quiet.. I should have guessed his brainpower there itself..
But no, he wants to prove it further and hence decides to vandalize a superstar's car. will it help to keep him anonymous? Or did RK call his house to threaten his dear son, then his action might make little sense..