Everyone makes mistakes, didn't k make an mistake in marrying T, he didn't even like Bhoomi so why did he marry her? Tanya also made an mistake in supporting ansh at the start? If N knew that T and K were happily married she would have definitely stepped out bcoz she truly luvs K. You all think T did a great job in look aftering Bhoomi but she was only N and ANsh's daughter, if she was K and N andini's then we would have seen how she treated her. No one blames K for liking three women, first Damini, then Nandini and now Tanya. N did make a mistak ein marrying ansh and she also suffered alot for it, eg rape.
No offence to Tanya fans, if you can say that n is selfish and wrong then I can say tanya is the same as well.