He told The Mirror: “I accepted that it wasn’t right and it had to end.
“It was so hard and I still don’t like thinking about it. I felt like my heart had been wrenched out of my chest.
“I was completely broken. It was the lowest point in my life. I can only imagine how hard it was for my wife, though – she didn’t deserve any of that. I feel so incredibly sorry for what she had to go through.”
The 39-year-old star has previously stated that he would love to be paired up with a male professional dancer on ‘Strictly’, adding that same-sex pairings on the BBC show is an “incredibly important” issue.
He said: “I would love to dance with a same-sex partner. I would value a time when same-sex couples could dance on shows like Strictly. It is incredibly important. We are making progress but I think there is still time to go.”
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Ashley Roberts, Dr Ranj Singh and Stacey Dooley arriving at the red carpet launch of Strictly Come Dancing 2018.
Doug Peters/EMPICS Entertainment
The TV doctor also revealed that Ruth Langsford, who he works alongside on ‘This Morning’, has been giving him advice, after she appeared on ‘Strictly’ last year.
He told Mailonline: “[Ruth’s] been such a sweetheart, she gave me her number and said call me anytime it’s about to all go bonkers, just give me a buzz, today she gave me some tips she said, ‘When you come down this runway, make sure you have a little routine planned out’.”
Talking about his ideal dance partner, he added: “Any of the girls would be amazing, they are all incredible dancers, I am limited by height, one of the shorter girls it would have to be.
“I’m nervous, I’m excitedly nervous, I really want to get stuck in and do it, but I want to do my best and give it my best shot.”
Seeing Danny Dyer taking his trotters for a Jack Plance is exactly what TV was made for, and whilst it might seem unlikely he'd ever sign up, don't forget he once said he'd "never" do 'EastEnders'... (credit:Matt Crossick/Matt Crossick)
Nigella Lawson(02 of15)
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Nigella loves anything decadent and extra, and with 'Strictly' being the most decadent and extra show on TV, quite why she hasn't signed up yet is a mystery to us. (credit:Lou Rocco via Getty Images)
Courtney Act / Shane Janek(03 of15)
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Bosses may not be keen on casting former reality TV stars, but they should probably make an exception for 'Drag Race' alum and 'Celebrity Big Brother' winner Courtney, who would bring some drag queen glam to the often binary world of ballroom. (credit:PA Archive/PA Images)
Idris Elba(04 of15)
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He may be busy having a huge Hollywood career, but wouldn't it be great to see Idris back on home turf? Plus, just look at how smooth he'd look in ballroom top and tails. (credit:PA Archive/PA Images)
Stacey Solomon(05 of15)
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When it was teased one of the 2018 contestants would be revealed on 'Loose Women', many fans predicted it would be panellist Stacey Solomon getting her dancing shoes on. And as much as we're excited to see Lee, Stacey would have been a brilliant booking. (credit:Doug Peters/EMPICS Entertainment)
Richard Madeley(06 of15)
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Just imagine Richard and Craig Revel Horwood clashing. TV gold. (credit:Anthony Harvey via Getty Images)
Gemma Collins(07 of15)
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The 'TOWIE' star was holding out for a spot on the 2018 line-up by way of compensation from the BBC, following *that* on-stage fall at the Radio 1 Teen Awards. And while bosses probably didn't want to give in to her diva demands, just think of all the meme-able content she would have served up. (credit:Karwai Tang via Getty Images)
Nadiya Hussain(08 of15)
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Snapping up the most popular winner of what was once the BBC's most popular show is a no brainer, right? (credit:PA Archive/PA Images)
Michelle Keegan(09 of15)
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The former 'Corrie' star has been tipped for 'Strictly' every year in recent memory, so we'd like her finally do it, even if it's just so we never have to hear a "Michelle Keegan for 'Strictly'" rumour again. (credit:Doug Peters/Doug Peters)
Rio Ferdinand(10 of15)
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Every series needs a sportsman, and what better man than former England captain and all-round good guy Rio Ferdinand? Given all that footwork on the pitch, we reckon he'd probably have the moves on the dancefloor too. (credit:Pierre Suu via Getty Images)
Beverley Callard(11 of15)
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From the look of this picture, the wardrobe department wouldn't even have to make any outfits for Bev - she'd be able to bring in her own frocks. (credit:Doug Peters/Doug Peters)
Greg James(12 of15)
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Having taken over as the host of the Radio 1 Breakfast Show, Greg has just earned a whole new following. And what better way to capitalise on that than by doing 'Strictly'? (credit:Neil Mockford via Getty Images)
Alan Carr(13 of15)
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Far be from us to suggest Alan would not be the most talented of dancers, but he'd be guaranteed to bring the laughs. (credit:Tim P. Whitby via Getty Images)
Sara Cox(14 of15)
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The Radio 2 DJ was robbed of a full run as a contestant when she took part in the 2013 Christmas special, if you ask us. (credit:Ian West - PA Images via Getty Images)
Paddy McGuinness(15 of15)
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Let the dance see the floor! (credit:PA Archive/PA Images)