Now i m sure guys its vihaan and gunjan, the way they r showing misunderstandings between mayank and gunjan i think mayank wil only backoff and vihan wil forcefully marry her as he is arrogant and wil not accept rachna as his fiance, and may be rajeev wil marry to rachna in order to save her izzat as vihan wil reject her, so both the sisters wil go in the same house