Soni said that the pair do not generate as much "heat" as Kapoor did with Shah Rukh Khan in the past, but had a "sweet" rapport and both gained a serious understanding of the film.
"It's not about candyfloss on a frivolous level or laughing and clapping with one another," he explained.
He told Bolly Spice that directing the romance film was a positive experience as Khan had been eager to work with him for a few years.
"Two years later, I wrote a script... [Khan] said, 'How can I say no to this script? This is one of the most wonderful scripts I've heard'," he added.