Frankly, I have no sex appeal. Just strolling in Los Angeles, London, or Paris, you will find a bunch of young guys like me. I am not James Dean.

I went out a couple of times with Pierce. He's totally recognizable, and he makes no effort to tone it down. Some people were glancing over at us in the restaurant, and he just went over and introduced himself. And it does work. It dissipates all the attention. Me? I just crawl under the table.

I read some gossip thing saying, because I looked really uncomfortable in a paparazzi photo or something, they're like, 'He should get used to it. That's the price to pay if you're getting $12m a movie'. If I'm getting paid $12m a movie I'd walk around naked. That's all nonsense. I don't know who makes that stuff up. Even the price for the first one was nonsense.

The special effects team designed everything, which basically allowed me to stand on a green box and look and stay relatively expressionless and all these machines did the acting for me. Just the way I like it (laughs)

I don't really understand it even now, It does have an angle which is attached to something quite primal in girls. I guess people want it to define them, like 'I'm a Twilight fan.' That's crazy to me. I think people really just like being part of a crowd. There's something just tremendously exciting about hyping yourself up to that level.

I think the most stressful thing in movies is when the weather is really random.

The script changed so much over seven months and just had loads and loads of re-writes. I tried to tailor things to what I was interested in, like the relationship with the dad changed quite a lot because I thought one of the things when you're a young guy one of your biggest fears is this irrational fear of walking in your dad's footsteps and living the same life as him. I thought, even if your dad's a good guy, you just want to assert your independence on everything and it causes these irrational sort of rages.