According to former Youth Congress members, Sushil was a ladies' man. He liked developing relations with women and staying close to them. The statement of  Indian Youth Congress president Maninderjit Singh Bitta  was once published in a newspaper in which he said that Sushil on purpose appointed female candidates into the party.

Meanwhile, Naina had suspected infidelity on part of  Sushil. According to some close sources of Naina, she had suspected an extra-marital  affair of her husband with a resident of South Extension. It was also reported in later investigations that Sushil had promised a Lok Sabha ticket to the lady.