I think both mistu & sis will get to know about each others feelings for Ruhaan. But sis being delusional will not trust ex. Mistu will try to avoid ruhaan & that promo scene can also happen now. Yeh sab dekhke sis ko lagega ex jhoot bol rha tha aur woh apne la la land mein rahegi. Ab dekhna hai Ruhaan kaise react karta hai