Kundali Bhagya 15 April 2019 written update of full episode: Karan challenges Preeta to prove Prithvi guilty

Kundali Bhagya 15 April 2019 written update of full episode: Karan tries to make Preeta understand that Prithvi is having an affair with Sherlyn but Preeta still trusts Prithvi. So Karan challenges her to prove that Prithvi is definitely having affair with Sherlyn