Why v generally think that every twist is need to be negative 1? Why not be positive 1???
Rohan is a very positive character yes he has fallen in love with niddhi but that's not a mistake.
Now talking about positivity. abbi hum bhul jay hai ki larger scale main niddhi ashu ka relationship accept hota hai ki nai. Their relative after knowing that there is so much age gap between two object or put question. Rohan is the only person who never find this relationship old or wrong? He sometimes even tries to convince anji and for that mater niddhi too. May be he is only person who can explain relatives why niddhi has chosen ashu who is almost 18 years older than her.
And this could be a very positive twist.