ok...lets do it like this...kabir and nisha have met before...while kabir was in college and nisha was planning...she hides her true nature from him...tey become sort of very good friends...any one...either kabir ya nisha...has a loves the other but doesn't tell...later kabir goes to join ramy...KN still have contacts...even when K is finding the thief...it is from K that nisha knws that he is woking with ramy for a new case abt history...she immediately realises it is abt her...she now keeps the relation good coz she wants to get facts from kabir...