Ali Khan sorry for Natalie Portman romantic movie joke

Bollywood superstar Ali Khan has apologised to Natalie Portman after telling reporters the pair was set to collaborate on a romantic movie.

The actor claimed he was teaming up with the Oscar winner for a new project, saying, "(It's) a love story we are working on... It's a secret... We are doing a film with Natalie Portman."

However, he quickly backtracked on his remarks after Portman's management team allegedly denied a film was in the pipeline - and Khan insists he was trying to deflect interest in his romance with actress Kareena Kapoor.

He says, "It was a joke, I am sorry. It's just that I am very annoyed with speculations on all aspects of my life. If this goes on, I might just start making up stories like these to entertain myself. Hope people will understand that."