The pop star, 38, who wed former The Saturday’s singer, 34, in 2012 and together share three children, also said how they enjoyed their first date in a less than glamorous car park
After Sam Thompson revealed girlfriend Zara McDermott ‘slid into his DMs’ Marvin shared: ‘I met Rochelle when JLS and The Saturdays were doing shows together. I’d always said to the boys, “I really like her, I think she’s hot”‘.
‘We went to a nightclub in Ireland after doing a show together one night and we were just chatting, getting on really well. She went to the toilet, right? She left her handbag at the table with me’.
He went on: ‘So then, I thought, right, got her phone out and called myself so I had her phone number. It took about three months of pestering her to get a date’.
Marvin added: ‘[Our first date was] McDonald’s car park in Wembley, that was our first date. Here we are 13 and a bit years later, three kids. I’m very, very lucky.’
Marvin and Rochelle are parents to daughters Alaia-Mai, ten, Valentina Raine, six, and three-year-old son Blake Hampton.
Later in the chat Fred Sirieix, 51, opened up on his first meeting fiancée Fruitcake, with whom he often appears on Celebrity Gogglebox.
Saying: ‘I met her in Peckham, I was walking up and she was smiling at me and I was smiling at her and I liked her eyes, I just had to talk to her,’.
‘I asked for her number, I said, ‘Shall we go for a drink tonight?’ That was 9 years ago. We’re getting married next year in Jamaica’.
An excited Sam then suggested the lads jet off to Sin City for the stag do, laughing: ‘We’re going Vegas! If you let me organise it, I promise you you’ll have the best time ever.’
The JLS star skydived his way into the jungle on Sunday evening as he kicked off his jungle journey by facing his fear of heights head on.
Yet Rochelle confessed her mind is at rest as producers keep her up to date on how her husband is doing.
She said: ‘The producer calls us earlier on in the day and they say, this is what’s going to happen tonight and they tell me that he’s doing ok. It’s sort of like a courtesy call.’
On Monday night’s episode I’m A Celebrity… Get Me Out Of Here! viewers were left in stitches when Jamie Lynn Spears was serenaded by her fellow campmates.
After breaking down in tears as she talked about missing her children, Sam Thompson offered to run her a bath, while Marvin serenaded her to Let Me Love You by Mario.
Reacting to her partner’s antics, Rochelle was completely shocked by the hilarious clip, despite prior warning from producers.
She continued: ‘And yesterday, she said at one point tonight, he does serenade Jamie Lynn Spears in the bath. And I was like, good job I’m not the jealous type whilst I’m there with his kids.
‘But when I watched it, I understood it a lot more. I realised that I don’t ever want him to do that for me. She just wanted to chill.’
Laughing over what the producers had told her, Dermot added: ‘The producers definitely oversold that for you.
‘There were like five other people around too,’ he said referring to Sam who helped out with the singing while Fred Siriex banged his make shift drum.
The mother-of-three also took to her Instagram as she filmed the clip while struggling to control her laughter.
Claim to fame: Former leader of the UK Independence Party and leader of the Brexit Party.
Phobias: Nobody likes rats, snakes and I am dreading anything to do with heights.
Biggest misconception you want to dispel?: I have been demonised over the years and so it will be nice to show people I am not nasty.
Role in camp: Lead on starting up plenty of campfire discussions.
Aside from your family, what will you miss the most whilst in camp?: A pint in the pub and the news.
Best & worst attributes: I hope to cheer people up when they are down. Worst? I am impatient and I do snore.
Dream camper: As a controversial political media figure, I never name names… But I am looking forward to meeting interesting people from all different fields
Claim to fame: EastEnders actress.
Phobias: Rats. I hate them!
Biggest misconception you want to dispel in the jungle?: I can be a little ditzy at times but I am definitely not a ‘dumb blonde’. I want to show I can do the trials, challenges and get stuck in.
Role in camp: Shoulder to cry on, help others if they are feeling low in camp.
Aside from family, what will you miss most whilst in camp?: Snacking. I am a little muncher and I am going to miss my morning cup of tea, too!
Best & worst attributes: I’d like to think I will be good if people are really struggling. I am not, however, very good at being bored, nor am I a morning person either.
Dream camper: Ed Sheeran. If he brings his guitar into camp, he can sing for us.
Claim to fame: First Dates star.
Phobias: I am scared of everything. I am dying to find out how vile the food will be!
Biggest misconception you want to dispel in the jungle?: I don’t think there is anything but I am looking forward to learning more about myself during my time in the camp.
Role in camp: I will definitely muck in with all the jobs. I don’t mind cooking or cleaning the toilets.
Aside from your family, what will you miss the most whilst in camp? My bed. It’s super comfy. I will also miss a cup of coffee in the morning.
Best & worst attributes: I like to have fun but I do snore and I am impatient!
Dream camper: It’s going to be nice to meet everyone but I’d love to see Dolly Parton, The Rock or Snoop Dog in there.
Claim to fame: YouTuber and Catfish UK star.
Phobias: I am fearful of everything!
Biggest misconception you want to dispel in the jungle? I am a pretty open book.
Role in camp: Keep the morale and humour high.
Aside from your family, what will you miss the most whilst in camp? My phone… I am always on it!
Dream camper: Alison Hammond or Adele.
Claim to fame: Hollyoaks star.
Phobias: I am a bit scared of the dark. When you go to the House of Horrors at Halloween and things jump out at you, I am not very good when I can’t see!
Biggest misconception you want to dispel in the jungle: It will be nice to go in as me and not as my Hollyoaks character.
Role in camp: Grafter or chef, I am quite good at cooking. But I’ve never cooked on a fire before. Aside from family, what will you miss most whilst in camp: Football and my creature comforts.
Best & worst attributes: I’d like to think I am a nice person and a good team player. I am not lazy but I do have a few bad habits like picking my nose. My girlfriend has been trying to train me to stop!
Dream camper: Sir Alex Ferguson or Neil Warnock.
Claim to fame: Zoey 101 and Sweet Magnolias star.
Phobias: I am scared of everything.
Biggest misconception you want to dispel in the jungle?: I think this is a nice chance to show who I really am.
Role in camp: Hopefully I will be the one who can support everyone.
Aside from family, what will you miss the most whilst in camp? A normal bathroom, air conditioning and my bed.
Best & worst attributes: I think my best quality is it takes a lot to hurt my feelings; but I am impatient and my family would say I get in a bad mood a lot.
Dream camper: Nicole Kidman, she is my favourite actress in the whole wide world, or Reece Witherspoon.
Claim to fame: Made In Chelsea star and radio presenter.
Phobias: I am not a creepy crawly guy and I hate anyone or anything touching my neck.
Biggest misconception you want to dispel in the jungle?: Since the age of 21, I’ve spent my whole life on TV and so I feel whether people have a good or bad opinion of me, it’s probably warranted!
Role in camp: I’m a ‘yes’ man so cooking, cleaning I will do whatever they want me to do.
Aside from family, what will you miss most whilst in camp?: I know this sounds lame but gaming.
Best & worst attributes: I’d like to think I am the court jester and I don’t take things too seriously, so if anyone is having a bad day I would like to put a smile on their face. Worst? I am quite forgetful and I am bad at focusing on things.
Dream camper: Stephen Fry. I think I would self-combust if he was going in the jungle!
Claim to fame: This Morning presenter.
Phobias: Insects and I freeze every time I see a spider and I am not sure what I am going to do if I am in a trial with them!
Biggest misconception you want to dispel in the jungle?: I would like people to know I am very clever at knowing useless information!
Role in camp: Mum. I am very motherly and I also love chatting to people.
Aside from family, what will you miss most whilst in camp?: Getting up to blow dry my hair and putting a bit of make-up on!
Best & worst attributes: I am an optimist and I love meeting people from all walks of life. Worst? I can be quite nosey and I am worried about my temper if I am too hungry.
Dream camper: Dawn French, I love her.
Claim to fame: JLS star.
Phobias: Heights. I have pulled out of a skydive with JLS in the past because I was too scared!
Biggest misconception you want to dispel in the jungle: To show I am not just a member of a boy band. It will be nice for people to learn more about me.
Role in camp: I’d like to think I will be a shoulder to cry on and a mediator.
Aside from family, what will you miss most whilst in camp?: My fantasy football app! I am obsessed with it! Four weeks without music is a long time, too.
Best & worst attributes: I’ve got three children under the age of ten and you definitely need a lot of patience for that! Worst? Rochelle would probably say I get ‘hangry’ if I don’t have enough food.
Dream camper: Paddy McGuinness – I’ve done Soccer Aid with him before and I know he’s funny, he gets stuck in and he is hands on.
Claim to fame: MasterChef star and food critic.
Phobias: Horrible people.
Biggest misconception you want to dispel in the jungle: People think I am quite forthright and scary but I don’t think I am scary! Hopefully people will see this.
Role in camp: Shoulder to cry on and I am a practical cook so I can help out.
Aside from your family, what will you miss the most whilst in camp? My three cats and my make-up bag. I love a bit of glamour.
Best & worst attributes: I would like to think I am funny! My worst quality is lack of sleep. I like my sleep.
Dream camper: Queen Camilla. She would be very practical. And Madonna – she could perform tracks from her Greatest Hits tour!