Katie, 36, was left heartbroken in May when she discovered Kieran had been sleeping with two of her friends behind her back.
The former glamour model initially said she would be divorcing her husband, however, the couple later decided to work through their marital problems while Kieran sought counselling for a 'sex addiction'.
In a new interview Katie has reassured fans that she is standing by Kieran - although she says she is not able to "forgive".
Speaking to Fabulous magazine, Katie said: "I won't forgive him and I won't forget.
"But I love him and I'm sticking by him. This has been the most hellish, insane, vile year of my life, but I've come out of it a better, stronger and more determined woman."
Just days before Katie discovered Kieran had been cheating, the couple unexpectedly found out they were having their second child together.
In August, Katie gave birth to daughter Bunny and this week they will be spending Christmas together as a full family unit.
Along with Bunny and son Jett, who was born in August 2013, Katie and Kieran will be joined by her three other children - Harvey, Princess and Junior - on Christmas Day.
Speaking recently to Reveal, Katie said she also hopes Kieran will dress up as Santa for her. Oo-err!
"I would like to sit on his lap and see what's in his package!" she joked.
"Because Kieran is an ex-stripper, he has all kinds of outfits and I'm sure he must have a Santa one somewhere."
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