Superstar Shah Rukh Khan says he did not realise how far his partnership and friendship with filmmaker Karan Johar has come with the upcoming film Ittefaq Se being the duo's tenth co-production.

Featuring actors Sidharth Malhotra, Sonakshi Sinha and Akshaye Khanna, Ittefaq Se has been co-produced by SRK's Red Chillies Entertainment and Karan's Dharma Productions.
 
On Saturday, Karan tweeted:

In response, Shah Rukh wrote:

The duo have earlier collaborated on films like Kabhi Khushi Kabhie Gham, Kal Ho Naa Ho, Kabhi Alvida Naa Kehna, My Name Is Khan, Student Of The Year and Dear Zindagi.