I disagree Roopal. He was too busy taking Kripa out of the Angry mob crowd.
Also, he was not sure if Kripa has found out the truth. For him, Kripa is still a person who is on the revenge spree against Angad.
Agreed that Prithvi still doesn't know the truth, but c'mon.. Kripa was struggling to get out from his grips just to reach Angad. Ok maybe Prithvi was acting on impluse, but can't he just figure out why she was struggling to get out.
He is not that naive to have not noticed Kripa's love for Angad. Prithvi follows Kripa everywhere and don't tell me he hasn't yet noticed that our girl has her eyes only for Angad
She herself has told him that she still sheds tears for our hero
I think deep down he knows, but is still in denial.