I'm a professional singer. I have a theory that all actors want to be rock stars, and all rock stars want to be actors. I spent my whole school life forming boy bands.

I guess I have a faith. I have an overriding feeling that all of this can't be for nothing. But then I also fully understand that it might be.

Theater is so wonderful and brilliant but it lasts very much in the moment. It's there and then it's gone.

There were a couple of years where I got a bit lost - I went out too much, I was a bit heartbroken, thought I was a bit more of a dude than I really was. I would love to go back and have a strong word with myself.

There's just been a couple of moments where - we did the one [ Carpool Karaoke] with Justin Bieber, which kind of went crazy and I think is at, like 65 million views on YouTube .

Sometimes you can have a reputation for not being relatable and nice because you had a bad day once.

It would be really arrogant of us to not have any of the fears.