I watched the precap. What Raghav told her about her ex husband - It's gonna bite him hard in his ass in the future when Mandaar finally does come back. He asked her to consider the fact that if she had to give one more chance to her dead husband, would she not? He knows she had not had any chance with her ex. Hence his desperate plea. She will agree to stay back and when Mandaar is back, Raghav will surely feel the pangs deep in his heart because he will realize that she stayed back for her dead husband. But then, maybe things from her side changes. No woman will stay with another man for the sake of her ex husband. Therefore, something is brewing in her heart as well but she does not know it yet. But Raghav will be bitten bad by this desperate plea.