Now it looks like she is hoping the newest addition to their family will prevent Kieran's eye from wandering again, with a source telling the Sun that the 27-year-old former stripper "cried like a baby" when his tiny daughter was born on Monday afternoon.
Jordan underwent a C-section after going into labour two weeks early and Kieran was reportedly at her bedside the entire time.
"It's only Kieran who has been able to keep her together through it all," the insider revealed.
"She was so scared about losing the baby. It wasn't a pleasant operation but she was absolutely ecstatic that her little girl was healthy."
As for Kieran, the birth of his first daughter had a huge emotional impact on him. "When the baby was delivered, Kieran started crying like a baby. She feels the birth of his daughter has made him see the light."
But will having a newborn in the house stop Kieran from straying again? His seven-month affair with Katie's ex-best friend Jane Pountney only started when her fourth child Jett was born last August after a "traumatic" labour and delivery, and Jordan recently spoke of her disgust at finding out her third husband had disappeared from the recovery ward to have sex with Jane.
"I saw Kieran briefly in recovery where he showed me a picture of Jett. I was allowed to hold him for a further 30 seconds before he was taken away again and Kieran said, 'I'm going now'," she said.
"I thought to myself, 'What the hell is going on?'
"There isn't one time I can remember Kieran saying, 'Well done babes, we've had a baby'."
Let's hope his reaction to their as yet unnamed little girl was a bit more positive, eh?