The Busted star has been candid about his problems with drink and drugs, revealing that there were times when he couldn’t get to midday without drinking and that there was a point where he was using six grammes of cocaine a day.
He detailed his addiction struggles earlier this year in the programme Fighting Addiction, which also featured former Big Brother presenter Emma.
Speaking on Loose Women, Matt admitted Emma was a bit “reluctant” to be on the documentary at the beginning.
But he said in the end it proved to be an “amazing” thing for them.
“There is something about kind of dredging up the past,” he explained.
“In our relationship it’s not like we didn’t ever talk about that stuff but it was kind of, that was then and this is now, and we move forward.”
“But by doing that, kind of going through it, it was amazing for us,” Matt went on.
The singer said: “We have kind of come out of it so much stronger.
“We have talked about so many things that we never have talked about and should of maybe. Well, definitely should of. And it has made us so much stronger.”
The star said the response to the programme had been “overwhelming”.
He said: "For me I have learnt the most in recovery from talking to other people who have gone through it and learning their stories and relating to them, getting strength and hope from different people.
“And this was just a much larger scale that we got to do that on.”
Matt, who is now sober, tied the knot with Emma in 2008.
They share daughters Isabelle, 14, and Trixie, seven, and 11-year-old son Ace.
Watch: Matt Willis felt “inadequate” when Busted started because he was "pushed" into playing bass