This is what happens when you mix business with pleasure. Once upon a time, Bollywood stars Ranbir Kapoor and Katrina Kaif were a real-life couple, and everything between them was happy and rosy. Then, they broke up. Everybody in Bollywood knew they had broken, up, but that didn't stop the producers of 'Jagga Jasoos' to cast them as romantic partners together. That was a questionable decision - and it didn't go very well for them.
Both Kapoor and Kaif agreed to play the parts, and turned up for work, but allegedly wouldn't exchange a word between each other unless required to do so on camera. The script called for the two to kiss, but Kapoor apparently told the director that it was out of the question, and he wasn't going to do it. We can't decide who's more at fault here - the casting director for choosing them to play the roles, or the two actors for agreeing to do it. Actually, seeing as Kaif was willing to perform the kiss, we're going to have to blame Kapoor.