I wish Sooraj just lied to Imli or Ghumaan that he is with Naina.
Because he is angry with Chakor so he knows if this news will reach to Chakor,it will hurt her.
Or possibly Naina is already married and living with her husband and Sooraj staying as a guest.
Something like Naina has daughter and Sooraj is attached to that kid and he staying there just to be with that kid.
Imli will be unaware of these.
It was shown in the episode,after Sooraj makes her as friend,she joined Sukor hands together which can be symbolic.
Chakor believing Imli so she will use Naina's name to angry Chakor against Sooraj.
So if he lied about Naina and when Chakor accuses him,he not going to deny it.
But then there is chances that Chakor accidentally meeting Naina somewhere and telling her truth about her relationship with Sooraj.
That will give Chakor reality check about Imli too.
Because Anjor can't interfere in bigger issues like this.