We know Punni will start her cheap acts to get Arjun, but I really hope that angry / khadoos Arjun comes back and show Punni her true place. Purvi should also confront Punni after knowing her true intension.
Now it is the time that ArVi become really good friends first, and try to bring ArMan close. After engagement party Arjun should understand that Manav still has lots of feelings for Archana. In process to bring ArMan close, their feeling should progress (both side, Arjun and Purvi) and confess their love.