Earlier this year, Katie told everyone Kieran had been cheating with a string of furious tweets, and ealier this week, she revealed he was also having an affair with another of her pals.
Speaking on her Fubar radio show, the former glamour model - who is currently pregnant with her fifth child- admitted that when she first found out he’d been unfaithful she went through a range of emotions, but now understands his condition better.
She told listeners: “It’s not that he wanted Chrissy or Jane, it’s just that they were so easy and so available that it was easy for him.
“What p*sses me off is that my friends haven’t got this illness, and they willingly opened their legs and let him do this. They knew they were in the wrong, but obviously Kieran has got this problem.”
Katie added that Kieran’s sex addiction has plagued his relationships in the past, explaining: “He’s never, ever, ever been faithful to any girl, to the point that even if he was with a girl he’d still be texting other girls, and send them pictures. That’s why stripping became a dangerous job for him because it fed him more.”
She also said that her kids are aware of Kieran’s infidelities, claiming: “They’re not stupid… he shocked us all.”
It was previously reported that Kieran was seeking professional help for a 'compulsive addiction' after the details of his affair emerged, though this is the first time it has been confirmed as a sex addiction.
Meanwhile, in her magazine column this week, the star revealed she still can’t bring herself to wear her wedding ring, as their “vows have been broken”.