Sab ko bata diya toh problem ho jayegi yaar... At this point, we have to assume that he has considered Sampoornas words but he also believes that Kaka is incapable of such cruelty.
So maybe he is trying to find out who is right here. Also he definitely knows Binoy is not so mahan to save Sampoorna.
Sab ka action-reaction genuine hona zaruri hai coz he knows that Sampoorna has accused Kaka of attempt to murder 😡
Yes if he is thinking all that then he is a genius 👏 and I somehow trust him to do the same.
Lekin I feel bad for Bon and Kaka. Specially Bon because uski toh koi galti bhi nahi hai