Gunjan taking on the types of mintu and Vihaan will lead to more dangerous situations. How she was about to be attacked with acid? and there wont be rajiv or Mayank to save her everytime.
Girls need common sense, practical thinking rather than playing games with dangerous people.
Gunjan had so many options to choose from. She could have told Vihaan in the beginning to do whatever he wants to do and she does not care. Any sensible girl would have smelt something wrong in the beginning itself.
And Rajiv. It wont take a minute for Vihaan to turn against rajiv too.