I love the fact I grew up wanting a brother and now I have four.

Life is funny. Things change, people change, but you will always be you, so stay true to yourself and never sacrifice who you are for anyone.

A girl fainted in front of me the other day. Obviously you don't get to see things like that unless you are The Beatles who have that power, and to see it that close was a bit scary... It was cool to know I can make a girl faint!

It's pretty strange because you have images of people in your head when you left, then you just think they're going to be the same when you come back, like time freezes. I have sisters and from the ages of 11 to 13 - it's a big change for girls.

Don't call a girl obsessed when she's in love.

I was a bit of a handful when I was a kid because I was quite hyperactive. Even in the house my mum used to put me in my pram because I was so full-on.

Without the fans there's no reason to be One Direction.