The girl who have all qualities to become perfect bride their is no need for a girl to get married or engaged to win the title.
U can also understand this when judges where encouraging gurpreet though she doesnt have any partner she can become perfect bride.but raj mom had eliminated her its not judges.they were agreeing like without a partner also a girl can become perfect bride and win.
SO DONT BE IN MISCONCEPTION THAT IF A GIRL HAS A PARTNER/GOING TO MARRY/ENGAGED CAN ONLY WIN THE SHOW