So basically just like Virat was forced to lock Sai up due to her stubbornness/ immaturity, here also he is again forced to manhandle her (pin her romantically) due to her harsh questions. Simple as that! It's not called victim blaming guys it's called teaching valuable life lessons to your teenage wife who refuses to listen to your commands or understand your unspoken words.
I will tell one thing though Sai is wrong here to keep harping on about that Pakhi cafe matter cuz he will never ever reveal what happened that day to her. So by now Sai should understand that for him upholding someone else's self respect is much more important than trying to clear the air with his wife. So she should just stop asking and stop expecting answers regarding Pakhi cuz that guy will not open his mouth. Since she's made up her mind to move she should just let him be and stop bringing up that question. They both can live peacefully then.