That sorry was distracted one, I apologize to my door when I bang against it accidentally and let me tell you, I have no emotional connection towards it
Its just something people do when they are distracted "I am sorry if I hurt you"
If he cared, he would have taken care of her or flinched when diya burnt her palm but he didn't give any reaction to it
Makers are giving you scenes to show, he doesn't a give a flying F
He is calling her Patralekha now which he didn't when his brother was alive, he always kept that "Pakhi" connection with her, he has ended that too
She is now a stranger to him - Emotionally
But in his family, she is mother of Vinayak and has done something for his family so that courtesy is there for her
I feel like he is grateful for her, that's why he said sorry two times. Till its revealed let's assume that marriage is fake. His calling her Patralekha displays another dynamic of complex marriage. Virat is suffering due to his choices b priorities. Pakhi is still ambiguous...positive acting or what