Kabir is not keeping his word about being a 'hands off' husband and only keeping to his deal. He now wants it all- loyalty and devotion from Kasturi.
He was wildly jealous of Kasturi rushing to Robbie and holding him at he Dil Se shoot. He was also out of his mind with jealousy about the sindhoor and then came up with this ridiculous 'not in front of my children' story as if Kasturi and Robbie were making love all over the place. I hope he finds out soon that it was his daughter that invited Robbie.
Also I hope he finds out that his daughter is becoming a surrogate mother except that Kasturi will probably change the hospital form and take it upon herself!