The mum-of-five stood by Kieran after it was revealed last year he'd been having sexual affairs with two of her closest friends while she was pregnant with their second child.
Kieran later said therapy had made him realise he has an addiction to seeking illicit thrills that felt great in the moment but made him guilty immediately afterwards.
Now, his forgiving wife has said she's proud of his efforts in therapy and how he's moved on from the scandal.
"So proud of how well he has come through therapy. People can change #soinlove," she tweeted.
Katie went on to say that she "can't wait" to renew her wedding vows with Kieran, adding: "Some things happen for reasons that are not nice but by being persistent you can get a happy ending."
She also tweeted an image of a huge bouquet of flowers that Kieran had given her last night.
Katie and Kieran married in January 2013 after a whirlwind romance and Christmas proposal. Their first child, son Jett, was born that summer.
The following year, in May 2014, ex-glamour model Katie announced she was pregnant again – but just a few days later Kieran's affair was revealed.
A heartbroken Katie initially vowed to dump her cheating partner but later did a U-Turn and said she'd stand by him – unless he cheats again.
Their daughter Bunny was born last August.
But while Katie has forgiven Kieran for his cheating, she has definitely NOT forgiven her two former friends that he slept with. She ended 2014 with a Twitter rant against them, branding the women "the two biggest whores in the world" and that she "wished them a s**t life forever".
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