While audiences are raving about the trailer of ‘Hasee Toh Phasee’ and the chemistry between the film's leads, very few know that Sidharth Malhotra and Parineeti Chopra were asked not to interact with each other prior to the shoot of the film in order to keep their chemistry intact.

Talking about this exercise said director Vinil Matthew, "There is a certain kind of tension that you experience when you are not familiar with a person and I wanted that kind of chemistry in my film. Since Sidharth and Parineeti haven't interacted much, I wanted to keep that slight tension intact and also wanted them to get to know each other only during the course of the shooting."

The advertising veteran who makes his directorial debut with the cucking frazy film also conducted separate workshops with Sidharth and Parineeti before the film went on floors.

"I did separate workshops with them for 3 weeks - I decided to do them separately as I didn't want to ruin the kind of chemistry I wanted them to share on the film,” added Matthew.

Dharma Productions & Phantom Films’ Hasee Toh Phasee hits theaters 7th February 2014.