Keira Knightley, Sienna Miller and Matthew Rhys have joined forces for new film The Edge of Love, about Welsh poet Dylan Thomas. They told Newsbeat about sharing a house in Wales, how they avoided the paps and shed more light on those relationship rumours.
What was it like sharing a house while you were filming?
Sienna: "It was mad but it was such a laugh. We just wouldn't take our pyjamas off and I had my dogs there. We would all have home-cooked meals and it's set in this beautiful part of Wales. We'd all go for long walks and picnics. It was lovely, idyllic... springtime, lambs, bluebells, the whole shebang."
Keira: "We didn't really get to know each other until we worked on this. When you're making a film that's so intimate and emotional it's really great when you actually become friends with the people you're working with, because it means that you can really play and feel like you're in a safe environment to experiment."
How did you find all the attention when filming was going on?
Sienna: "When we are on location it can be quite crazy and it was. We ended up having to re-do a lot of the dialogue because in the background you could hear the clicking of the paparazzi cameras, so they messed up takes and I think a scene of us on the beach was on YouTube the same night as we shot it. They never followed us to our mad mansion so we could get away at nights and go for walks."
Matthew Rhys plays Dylan and Sienna Miller his wife Caitlin
Keira: "It was pretty intense. There was a point in Wales where we actually had more photographers than cast and crew members put together, which was absolutely nuts. It gets dangerous on a daily basis but you know that I have ranted so much about this, I don't think I can rant any more."
Matthew: "Bless them - it was certainly an eye-opener and an insight into their lives and the nightmare that it is being followed by thirty strange men with trench coats and cameras. I hadn't realised how intrusive it is. Because of the two of them the interest is huge. It is unnerving, they can be aggressive at times - they [Sienna and Keira] get scared."
Keira, you're singing in this film - did you find it embarrassing?
"It was completely terrifying. I'm not a singer. I recorded it before and I thought I was just going to be miming along. John the director came up to me in my dressing room that morning and said 'I want you to do it live' and there were like a hundred extras and sixty crew members. It was one of the most terrifying experiences of my entire life - so don't expect any albums any time soon."
Did you enjoy making the film?
Matthew: "It was a dream job for me I think primarily because I got to play Dylan Thomas. Of course, it was a huge added bonus that I got to be all frivolous with the two of them. And I heard it was a real honour for them as well."
Matthew, How do you feel about being dragged into the speculation over Sienna's love life in the tabloid press?
"I don't believe any of it. There's nothing you can really do that's going to stop what the tabloid press writes about. You're wasting your energy if you're going to get wound up by it so you just laugh it off."