A unit hand present at the music launch revealed to us the apparent reason for this behaviour between the two. He said, "Both Deepal and Tulip star opposite debutante Amarjeet in the film.
When the film shoot began, Deepal was the main female lead of the film with Tulip having just an item song with a couple of scenes more. But then when the film was nearing completion, the makers seemed to have changed their mind and went on to add more songs and extra scenes of Tulip.
If that wasn't enough, the promos of Runway too had Deepal in a blink and you miss kind of appearance. This definitely seems to have infuriated Deepal who has a super hit behind her like A Wednesday whereas Tulip is yet to deliver a single hit despite having been in the industry for over seven years."
No wonder Deepal's despise for Tulip was for there for all of us to see. When the two were made to pose along with each other the two just stood next to each other without exchanging a single smile or even looking at each other.