Actors Angelina Jolie and Brad Pitt kept their romance alive while shooting films in two different continents by sending each other handwritten love letters.

"He was supportive from a distance, and it was quite romantic in a way," Jolie said.

The "Salt" star was directing "Unbroken" in Australia, while her fiance Pitt was in London, shooting his own Nazi war film, "Fury".

The actors decided to embrace the time period their onscreen dramas were set in and shunned modern technology in favour hand written notes, reports femalefirst.co.uk.

"We decided to be of that time when we could imagine he was in the European theatre and I was in the Pacific theatre, and we wrote handwritten letters to each other that were very connecting for us, thinking of the people that were separated for months, if not years, at a time back then," said Jolie. The couple has been engaged since 2012.