No, it is never ok to speak with in a manner these two do. Once in a while, mazaak is different among friends or behind closed doors. I enjoy their dancing and they do make a cute couple and seem to have a deep-rooted love. But how they treat each other is different story. I always find one upmanship with them. And yes.. Amrita has said "i tolerate himanshoo's anger and he says hurtful things when angry". And thats never should b ok for anyone. Their families r watching this too. Kiss and makeup is not an answer to every single laDaai' It appears just like their deep rooted love, their grudges are deeprooted too. All the sacrifices both keep referring to with each other.. Careerwise, peraonalitywise and whatnot. It all comes out in one form or the other and neither leaves an opportunity to verbally attack, walk off in anger or bring out the past.
Whatever the unresolved issues in such a new marraige (stemming from their long courtship) .. Tolerating abuse is not a solution.