Its very much understandable that BP is worried about mishti. He is concerned about thinking meenu as mishti's MIL. He knows meenu's threat are not bluff either. But in that concern he is kind of forcing mishti to get married to nishant. No doubt nishant loves mishti and understands her to an extent. But to get over someone (that too abir) how come getting her married to someone else is a solution?
I had always seen BP as someone who is logical, practical and one with open-mind. He knows mishti still considers herself in-debt to mahs and cannot say no to him and BM. He is the head of the house, his suggestion is more like a decision for others. His suggestion is outright ridiculous. I have no issues with nishant here but honestly. Everyone can see the girl is still in love with someone else. I am not even saying he should consider abir for mishti right now. But simply bcos abir isn't good enough for mishti, ask nishant the stupid question cos he loves her.
Is she a ball or what? She is a human too. And meenu's fear has made him blind to mishti's state of mind. His is literally hoping to get them married in a week.
PS: If I may say so, Isn't BP too getting blackmailed by meenu in a way. She threatened him and he acted instantly.