Justin Bieber reveals the one thing he is really frightened of

'As Long As You Love Me' superstar Justin Bieber has revealed that he has one really deep-rooted fear that he can't seem to overcome.

In an interview for Cosmopolitan, in which he reveals 20 facts fans might not already know about him, the heartthrob confessed that he suffers from arachnophobia: "(I'm secretly terrified of) spiders."

Bieber, who recently pulled out of a scheduled appearance at Fusion Festival in Birmingham "due to an unforeseen issue", also admitted that he's a particularly skilled swimmer and added: "I can hold my breath underwater for two minutes." Speaking about cancelling his UK festival slot, the singer explained:

"UK beliebers I'm going to make this up to you soon. And now the UK press will start to tear me apart. Comes with the job. Love u guys regardless and I will make this up to you. I do want to thank the prince's trust for their understanding and I don't take moving any show lightly. I will see u soon UK."

Watch Bieber's recent interview with Ryan Seacrest here: