i havnt seen the new promo .but still i think ran will not find out.i think the instant she start 2 say she is nat not kan.somethin ekta style can happen u know.may be a huge wind comes and blows the candles away.then she'll be kan again. or ranbir might think its a joke and laugh it off and suddenly adi calls him and he goes of. i think he will only know after he/she confess his lov. then hell hav 2 choose btwwn kan and nat.eithet 2 lov kan or 2 destroy nat.u never know its ekta after all