I wouldn't say I'm girl-crazy, because that makes me sound like a bit of a womanizer. That isn't really me. But I am quite flirty - maybe too flirty. I'm an 18-year-old boy, and I like to have fun!

The first time I had sex, I was scared I got the girl pregnant. And that was despite the fact we were safe. Luckily, we were fine. I would never risk not wearing a condom, it’s too much of a risk. If you’re not ready for a child, then don’t risk it.

I don’t think you can really define love

I’ve always wanted to be one of those people who didn’t really care much about what people thought about them.. but I don’t think I am.

You get moments all the time that kind of make you pinch yourself, some of them make you quite emotional. Winning a BRIT was a big moment because we were just so excited to be at the awards in the first place. Selling out Madison Square Garden was pretty amazing too. Then we woke to the news that our UK tour was sold out. It was crazy.

I don't think you can ever get used to being this famous. I've learnt how to keep things separate or at a distance. I've nothing to hide. But seeing this as work, like a job, means I can take a step back. It's me right now in front of you and in the papers but it's not all of me. If you give yourself entirely to the business, you'd end up going mad. And I'm not mad. Not yet.

The difference between doing something and not doing something is doing something.