Katy Perry just ranked her celebrity ex-boyfriends in a refreshingly honest interview

'I would have sex with all of them after I get out of this place.'

In case you didn’t know, Katy Perry has locked herself in a house and she’s been livestreaming the past 72 hours to promote her new album Witness. It’s not exactly how we’d spend our Sunday night, but James Corden made tuning into her YouTube channel worth the watch. After some pressing, the Late Late Show host managed to drag information out of her about her famous exes - and how good in bed they are.

The Roar singer, dressed in pyjamas and an eye mask, invited the host on for a live Q&A. Katy had the choice to either answer one of Corden’s questions or pass on answering by eating bizarre tapas, which included cow’s tongues and a mayonnaise shot.

He went straight for the jugular, asking, ‘From best to worst in bed - but this is working on the notion that they’re all good - rank John Mayer, Diplo and Orlando Bloom.’

She promptly began screaming in refusal, covering her face with a towel in embarrassment. Katy then blurted, ‘They’re all amazing lovers and I would have sex with all of them after I get out of this place.’

James continued pressing her for answers however and the mortified star eventually conceded, if only to avoid eating a thousand year old egg. She revealed that John Mayer was the best of the three, with Orlando Bloom coming in second and American DJ Diplo in third. Given that the Katy Perry and Orlando Bloom split happened just recently, at least she has some fond memories to look back on.

She also revealed that an unexpected celebrity was The One That Got Away - classical singer Josh Groban. While they’ve never been officially linked, Josh admitted in an interview that they had ‘skated on the line of dating’ and rumours had been circulating about them in 2009. Katy confirmed on the livestream that he was in fact who the song was written about, but assured James Corden that he was ‘one of [her] good friends’.

Well, given that both Josh Groban and Katy Perry are now single - anything could happen.

The Katy Perry Witness Worldwide livestream is still taking place on her YouTube VeVo channel. Right now, you can watch her sleep if watching paint dry isn’t dull enough for you - however according to the livestream, a choir will be coming round to wake her up soon.