So the spoilers tells us that, sahir is married. Well, i deduced this from the very first episode. i actually thought he was married before, and his wife must have died leaving him , making him a bitter person.. but the zabardast twist was, his wife is still alive. i have a feeling that Alvira must have done something to his wife, to endanger her health and make it seem like Sahir has done that, and thats why Sahir is feeling guilty about it. Alvira hated his wife, maybe because she is related to Kurti Aapa.. Alvira must have wanted a bahu like Aarzoo, who respects elders. and from Alvira's POV, Aarzoo can be easily manipulated in getting her work done.
i just hope that, Sahir wont marry Aarzoo without divorcing his first wife..Aarzoo hates her stepmother , because she is the 2nd wife of her father. and i dont think Aarzoo would agree to become married to a person like Sahir, who is already married to someone else.