When Tarun forces Bani to marry him may be to save JAi from being framed with Saahil's murder Pai should sit in mandap instead of Bani.
This will be repay of what Bani did for her when she eloped with Oushy & will wash all her bad deeds of trying to snatch her sisters husband from him.
Pia & Tarun two obsessive pshycos will make nice pair too.