I don’t understand why people are worried about Pallavi helping out Mandar for a bit. Pallavi doesn’t know this Mandar is a bad person or if he is even real. For her, this is a man she trusted and married voluntarily but lost on their wedding day.
There is no doubt that Pallavi has moved on completely and is heart & soul in love with Raghav. That doesn’t mean she still doesn’t care about Mandar and wants him to heal himself mentally. Helping him get settled with Deshmukh family and regain his memory loss goes in hand with her helping personality.
I don’t see any problems with Pallavi helping as long as she tells Raghav everything and doesn’t let any misunderstandings come between us. They trust each other completely but they can still hurt each other unintentionally.
And also the fact that Pallavi is getting physical with Raghav is the main clue that she will never leave him. Pallavi is the one who is initiating the physical contacts like kissing etc. Pallavi would never ever take this relationship to that level if she had any doubts on their future or any slight romantic feelings towards Mandar.
I won’t be surprised that Pallavi & Raghav consummate their marriage while Mandar is still in the picture.