While details of a specific "serious affair" involving Priyanka Chopra as claimed by Prahlad Kakkar are not readily available in current news reports, Kakkar has publicly spoken about Chopra's career and personality in past interviews.
In an old interview from 2018, Prahlad Kakkar lauded Priyanka Chopra for her intelligence and beauty and discussed her Bollywood beginnings and her Hollywood journey. He noted that Chopra always handled her own affairs and was very straightforward in business, negotiating directly with producers. Kakkar also mentioned that singing was Chopra's first love, and she spent time and money in recording studios. He added that she got her first major role as a "negative role" and she played it with complete conviction.
Kakkar has also discussed other Bollywood personalities, such as Aishwarya Rai Bachchan. In a recent interview, Kakkar mentioned that everyone was relieved when Aishwarya Rai and Salman Khan's relationship ended.