Actually pata he mujhe Malhar ka intially sach na bathana galat nahi lag rahi he
Technically Avni knows she has no rights on Malhar
Koi hakk nahi he
Shaadi nahi huyi he so she can't even legally claim him
Bacha bhi uska nahi he
Uska aur uske bache ka future ek hi cheez pe tikka huva he Malhar ki daya
The moment Malhar withdraw his hands she is left blank and without any support
So basically if she comes to know about kalma
She will start fearing that Malhar may leave at any moment
She wil have to lead an insecure life
. especially as she knows very well that Malhar still loves his first wife
And it is beacuse of that love despite her showing feeling for him he doesn't reciprocate
To put a pregnant woman through a constant torture or insecurity that at any moment she may loose her only supports system is not something a man like Malhar rane would do
It is not about feeling but about humanity
He also doesn't say anything to kallu beacuse if she knows both of them won't be able stay apart for longer she will get closer so will he
Again avnis life and future will be question mark
Like ek din achanak he can't proclaim infront of world that Jisko meien biwi bola wo biwi nahi he and bacha mere nahi he
If he doesn't say that and keeps a realtionship with kallu by just telling her alone the truth usse bhi bada shaayapa
Kallu will be named as a madhuri who goes with a married man
And malhar ko infidelity ka mohr laga lenga
So it is logical that both Avni and kalayni are kept in dark
It is done not beacuse Malhar doesn't love kalayni or because he loves Avni
This is the issue mainly
My pov not based on epi
Malhar ke bass chale toh he will tell Avni everything as per epi par .......