Anyone who has been watching Dragula will know The Boulet Brothers as the incredibly stylish, matching duo who present, judge and are just generally the brains behind the show.

Anyone who doesn't watch – aside from the fact that you really should – we hate to break it to you but The Boulet Brothers, Dracmorda and Swanthula, are not brothers at all. They are actually a couple who have been together for over 20 years.

Revealing the secrets of their long relationship, they spoke exclusively to Digital Spy, saying: "I think it's that we're really best friends.

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"We've been having fun with each other since the day we met. We're always bouncing ideas off each other and having a good time together."

Drac said: "I think, especially in my family, my parents are still together, both sides of my grandparents are still together. It really taught me the moral of having to stick through hard times. I think these days people throw things away when they face difficulties because I think our culture teaches us to do that now.

"In older times, you stuck with your person and worked it out. Obviously I don't think that's the way to go if there's serious abuse or things like that. But we went through hard times together with different things, and getting through those things made us stronger and made our bond closer."

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The duo, who are well-known for their long-running club nights, spoke about why they always appear in public wearing drag.

"It's something that's always been important to us, to have a private life outside of the show. We don't appear out of drag, we don't take pictures out of drag or go to premiers or make appearances out of drag. You either see us as The Boulet Brothers or you'll see us in the grocery store and you won't know who we are."

Adding whether they ever get recognised out of drag, Drac added: "We do sometimes, some people are really good with faces and I have a pretty distinct voice that I didn't realise until the show started, but now I realise it. I guess people have recognised us when they've heard us talking and they've seen our height difference and they go, 'Hey are you...?' That has happened.

"Or if we've been hanging out with Ian or Israel from the show, they don't disguise themselves at all. So if we're at a theme park or doing normal daytime stuff with them, people recognise them and put two and two together."

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They added that when this happens, it's "off-putting", saying: "Our daytime personas are extremely different – we need that to keep ourselves sane. We can't be partying, crazy monsters 24 hours a day. Then it's not special when you do it because you're exposed to it all the time."

Despite being fiercely private, the duo didn't worry about putting their relationship on TV when it came to making Dragula.

"That's our characters, I don't feel like our real relationship is on TV," Drac said. "That's just for us and it's partially why we wanted to do it that way. It's not like we're on the Real Housewives where we get divorced the next year and things."

Tickets for The Boulet Brothers: Dragula Live are available here.

The Boulet Brothers' Dragula: Search for the World's First Drag Supermonster seasons one and two are available to watch now on Amazon.

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