Yesterday's episode appears as though Milind is to be blamed for fighting with Neev and failing to understand Prachi. I have a different take on it. He knows that Prachi and Neev have not done anything wrong. Neev may love Prachi but she values her marriage more than anything. He has heard Prachi say that. He surely believes that. But he thinks that she will be bettter off with Neev. He thinks that Prachi is with him because she is compelled by her sense of values. He does not want that. He wants to be loved. He wants her to stay in the marriage because of love which Prachi has still not revealed to him. That is what is breaking his heart. He wants the divorce to end the pain for everyone. He wants to be seen as rude so that Prachi herself would want to leave him. His fight with Neev is again to make himself look like the bad guy.
I think when he told Neev that in this house someone is betraying her husband and someone is betraying his wife he meant himself and his supposed ONS with Ayesha. When he rants about his misfortune of not finding love and Prachi gets scared by his yelling, he immediately becomes soft towards her and tells her that he did not mean to scare her. He understands how it is difficult to forget one's first love. So I am sure he is doing this to let Prachi find her happiness.
He loves her too much to keep her bound in a marriage which he thinks is a burden on her. That is why even though he wanted to stop her he does not. The pain was very clear when she tells him that she is leaving because she could not bring him any happiness and by her leaving maybe he will find his happiness in his first love. That scene was really heart wrenching. Milind loves Prachi too deeply and he is hurting because of it.
Hope the two will tell each other how they really feel and unite soon.