The 37-year-old and Graham, 41, split in 2013, just six months after they tied the knot. Now former Hear'Say singer Myleene has admitted that those close to her begged her make him sign a prenup.
Speaking to the Mirror, she said: "I married a convicted drug dealer and didn't sign a pre-nup. What was I thinking? When I say that sentence aloud, I realise how stupid it was.
"I just wish I had listened to my dad, my friends and everyone in the papers. Everyone could hear the alarm bells except me. I should have just opened my eyes."
Myleene and Graham were together for 11 years before their wedding, and share daughters Ava, seven, and four-year-old Hero.
When Graham ended their marriage, Myleene was thought to be worth around £11 million. She recently suggested that she lost out to Graham as a result of not having a prenup.
But he has dismissed these claims. He tweeted: "Thankyou for once again slandering my name in the papers to promote yourself [sic].
GALLERY celebrity women guilty of finding love with lawbreakers
Celebrity women guilty of finding love with lawbreakers
Ferne McCann and Arthur Collins
Ferne might be one of our TOWIE favourites, but the gorgeous Essex girl has been very unlucky in love. Her relationship with Charlie Sims played out spectacularly while she was on TOWIE, and during her time on Celebs Go Dating she never met anyone who she was interested in.However, just days after publically talking about her plans to marry her now-boyfriend Arthur Collins, the police issued an appeal to find him in connection to an acid attack at a club in London over the bank holiday weekend. He is now serving time.
Gemma Collins and Stephen Mortimer
Gemma and Stephen had an on-and-off relationship. He spent two years in prison for grievous bodily harm, and during Gemma's stint in Celebrity Big Brother in 2016, he was back in prison for allegedly breaching his license terms.When she left the house, she also had to face rumours that he had cheated on her numerous times.
Kerry Katona and George Kay
Kerry and George have had a tumultuous relationship, and although they called it quits in 2015, the couple decided to rekindle their relationship in August 2016.However, during the time of their marriage breakdown George was allegedly detained for assault and unlawful possession of a taser. He also previously served a three-year prison sentence for blackmail.
Mel B and Stephen Belafonte
Mel B filed for divorce from her husband of ten years, Stephen Belafonte after ten years together. The couple share a daughter, Madison. In the leaked papers Mel cited irreconcilable differences as grounds for divorce.Since then, it has come to light that Mel made many allegations against the film producer, including that he was reportedly physically and verbally abusive throughout their marriage.
Lauren Goodger and Joey Morrison
Lauren has received a lot of bad press about the men she has dated. When she first appeared on TOWIE, she had been dating Mark Wright for the best part of eight years before they went their separate ways.Lauren then went on to date Jake McLean for four years, and then moved onto Joey Morrison. He's a friend of a friend who was serving time in prison for violent drugs-related charges,
Steph Davis and Jeremy McConnell
Steph and Jeremy had an on-off relationship for the best part of 2016 after meeting in the Celebrity Big Brother house.When Steph announced she was pregnant, Jeremy refused to believe he was the father and throughout the pregnancy she was determined to raise her baby on her own.However, when Caben-Albi was born Jeremy stepped up and appeared to be trying to make up for lost time. The couple reunited, but shortly afterwards reports swirled that Jeremy had been arrested on suspicion of assault.Before the news broke, Steph had shared a picture of her bruised body on Snapchat, prompting fans to believe she may have been the victim. Jeremy denied any wrongdoing.
Daniella Westbrook and Tom Richards
Daniella dated cage fighter Tom Richards, and they even got engaged before the relatinoship broke down in 2015.Following their break-up, Daniella claimed that Tom had violently attacked her although the charges were eventually dropped.
Chantelle Houghton and Alex Reid
Chantelle was engaged to Katie Price's ex, Alex Reid, and the former couple share a daughter, Dolly.But just weeks after Chantelle gave birth, cage fighter Alex was arrested on suspicion of causing criminal damage to the couple's Brentwood home and the pair split shortly after.
Katie Price and Leandro Penna
Katie and Leandro met at an Oscars party in 2011 and started dating soon after, even getting engaged for six months before the relationship ended.Although he appeared to have a squeaky clean image, in 2013 Leandro was accused of assault after a disagreement at a party in London, hinting that Katie's ex was more of a bad boy than anyone initially thought.
Cara Kilby and Daniel Harris
Cara Kilby only had a brief stint on TOWIE, but she was a firm favourite with viewers.Her boyfriend, Daniel, was sentenced to two years in prison after being accussed of leading a gang that sold drugs across London.
"It's frankly embracing and complete lies…@KlassMyleene. I've stayed quiet for three years now but enough is enough. Please explain to me how I took your money?
"I lost so much money from our divorce and our house that we bought together. And further money from fighting you over letting me be a father to my kids whom I haven't seen in over a year.. shameful.
"One day I hope you will put the interests of your children first and let them see their father. Instead of focusing on what lies you can tell to boost your career."