hi guys here is what i think
i think arjuhi should get married without telling anyone.and KS who is in love with arohi(for real)asks HP for arohis hand.HP is happy and asks our aarohi to marry KS but she is already married arjun and she refuses to marry ks. knowing how cranky our supposedly cancer patient hp,they will have a huge fight and arohi blurts the truth about her marriage.
then everybody forgives them and our KS puts a brave face and congratulates our arjuhi.but KS thinks he is betrayed by a woman again and he plots against arjuhi... arohi kills ks and arjun takes the blame at the same time she gets injured and she forgets everything and becomes violent ..they had to send her mental asylum.
our ganga saves arjun from his conviction..arjun goes back to see arohi..and takes care of her soon she becomes normal
how is it guys i knoe it sounds so filmy but i like it