Vikram Bhatt’s film 'Ghulam', starring Aamir Khan and Rani Mukerji in the lead roles, was released in 1998. The dialogue and songs of the film became quite popular. 'Ghulam' was a huge box office success. It was Vikram's third collaboration with Aamir. Sadly, 'Ghulam' was Vikram and Aamir's last film together. They never worked again after that. In an exclusive interview with News18 Showsha, the 'Raaz' director opened up about why he never collaborated with Aamir again. Read on to know.