Well coming back to your topic I feel you really cannot blame Rishi for what situation he is in right now . He knew and thought Indira was dead and has suffered 8 long years, and to his surprise one fine day he finds Zara a look alike of Indira in front of him... He was shocked and anyways having a bad marriage with Shweta. He started comforting himself in the company of Zara whom he made believe that she maybe Indira but didnot impose her to think that way... After all Zara is matured enough to think if she is Indira...
So at this moment when he said Zara that he still loves her it is true because he did start loving Zara ... When he made his point or proposed her for marriage stating he DOESNOT care whom she was... Coz on his mind he has made way for Zara ...( don't want to give judgement whether he was right or wrong)...
as Indira was burnt by sn family till that time...
So at this moment I am with Rishi and Zara completely and support them completely...