Lily James "loved" working with her boyfriend Matt Smith.
The 26-year-old beauty and Matt, 33, have been collaborating on the eagerly awaited new comedy horror movie 'Pride and Prejudice and Zombies', and Lily admits she's relished the experience of discussing work with her boyfriend.
She said: "He just made me laugh all the time. I actually loved being able to talk about work. It was great that he had to propose to me."
Lily also admitted she was initially reluctant to join the Burr Steers-directed movie, but was convinced after reading the script.
She told Marie Claire magazine: "When I saw the e-mail from my agent, I was like, 'This sounds terrible!' Then within 20 pages of the script, I thought, 'This is so cool! Somehow these two worlds join together, and it's a riot.'"
Lily is also joined in the movie by the model and actress Suki Waterhouse, who dated Hollywood star Bradley Cooper until earlier this year.
And Suki, 23, has admitted dyeing her hair darker for the role was the most painful aspect of working on the film.
She shared: "You watch 'America's Next Top Model', and you're like, 'Why are these girls crying about their hair?' But then it happens to you! It sounds so pathetic, but I definitely cried."