Okay, but what about Aman. He knows that Kakun cannot be pregnant as he has not had any physical relationship with her. Is he going to think that she slept with Rahul? What are the odds?
I do not think that he will believe her. In fact, he will probably have another thing to blackmail her with.
Aman: "If you don't surrender, I will tell everyone about Tanu's pregnancy."
Kakun: "Oh dear, lovely husband. Please don't do that."
Aman: "Why not? I am, after all, a psychotic monster. It's my hobby."
Kakun: "Oh dear, lovely husband. Please don't do that."
Aman: "Then promise me that you will never leave me. Sacrifice everything for my love."
Kakun: "Okay. It's tiresome to act all Warrior Queen, anyway. Let's live happily ever after."
Rahul: "But Kakun-"
Kakun: "Not right now, Rahul. We're having a moment here. Scoot."