Katie, 36, told fans this morning (17 June) that her husband had been having an affair with both Jane and a second lady during their short marriage.
Speaking on her FUBAR Radio show, pregnant Katie said: "My trust in men at the moment is absolute zilch.
"I was with him for four months then, after our second wedding, he's at it with my best friend and another woman for 10 months.
"It's a serious matter, I've got children, he's been with my best friend and another woman."
Kieran has not commented on Katie's latest claims. Jane, meanwhile, has previously admitted their affair and said that she "deeply regrets" it.
Yesterday, it was revealed that Katie had been appointed as a new host on the unregulated online radio station and she's wasted no time in spilling the beans.
Along with admitting that Kieran's affair was exposed with a Jeremy Kyle-style lie detector test, she has also branded him "cruel" but said he is "getting help".
Earlier, she said: "If a friend was telling me what had happened to me, I'd be like, 'Get rid of him'. You have to be adult and assess the situation though.
"Was it normal? No it bloody wasn't! So he can't be that normal in the head. I can only stick by and see what happens. I have to see that he's making a difference."
Pregnant Katie has also told how her ex-husband Alex Reid has been sending her emails since she announced her marriage problems with Kieran.
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