The Biggest joke has been the scene when he tells Dipali izzat se naam lo madhu ka. Man, you herself are literally stripping her of her izzat.
He claims to love a woman and makes her a game. He is forsaking her dignity and happiness for his own selfishness. At least RK called himself Kameena when he did the psycho behaviour but Sultan keeps on insisting that he has holy motives.
Sultan's so called love for MB is not junoon but pure cheap lust and revenge.
In fact I would say he is the dangerous obsessive lover who has made her a game to be won.
He was humiliated by MB and so is using her to take revenge from RK. He himself admitted that in today's episode- tumhe khud ko haarna pade to koi pharak nahin padta.
I had thought they would make him an interesting grey character after the Bhai track. They made him a mentally sick revolting character who gives two hoots about using his own mother.
Sultan knows MB doesnt love him or care enough to dump her husband for him. So his love is the selfish & obsessive kind where he doesnt care about the hurt he is causing to the woman he loves.
RK when manipulated MB knew she loved him, the signs were all over the place so he used her emotional vulnerability to force her into staying with him.
RK knew all the time that MB is angry she has not stopped loving him ( a fact later confirmed by MB herself). Sultan knows that MB now finds him disgusting.
So him forcing her would be obsessive, immoral and wrong.
This is not junoon - this is simply what the people we read about in the newspapers do: throw acid, rape/burn a woman because she rejects him.
Sultan is doing equivalent of that by hurting/damaging the object of her love.
RK when wanted MB back did not say marry me or I would resend your father to jail for my murder attempt.
But Sultan is bargaining her husband and family's dignity in exchange of his mother's dignity.
I think he deserves the son of the year and lover of the year award.