Watch: Kylie sends emotional video message after fleeing The Block
During Monday night's episode of The Block, Kylie fled from the Phillip Island site after her husband Brad admitted he acted flirtatiously towards Mimi the Saturday prior.
Flashback footage from the night in question showed House 4 and 5 hanging out, and Brad later said Kylie overheard "inappropriate comments".
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"I was flirting with Mimi, Kylie overheard them and very understandably, she's quite upset," he told cameras.
Kylie then called her mum in the car, as further footage from Saturday night played.
"How many chances have I given him... time after time," Kylie said, as her mum asked: "So what sort of things were they saying?"
As she noted some of the things that were said, a despondent Brad told producers in a solo piece-to-camera that he felt embarrassed and hated that he'd hurt her.
Kylie phoned her mum to discuss what had happened. (Nine)As the day progressed, host Scott Cam revealed that Kylie had gone to a meeting in the day but hadn't been seen or heard from since.
"We found her car, microphone, Block phone, all the high vis. We've done everything we can to locate her, and she's not been seen," he said.
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Brad then discovered her car abandoned in a carpark and scissors on the front seat offered him a clue: "They won't let you take them as carry on."
Kylie left one last video on her Block phone to producers saying she was not returning to site, which Brad watched.
EPISODE 45 RECAP: Kylie flees The Block after Brad admits to flirting with Mimi
"I'm going home, and I can't say I'll be returning. You can talk to Brad about the details, but unfortunately I can't do it anymore," she said, thanking everyone for the opportunity.
In a heartbreaking piece-to-camera, Brad says he believed her. "I'd very much say that I've just single-handedly destroyed my family," he said.
We then watched Kristian and Mimi deep in discussion, as she told her partner that herself and Brad were "just talking" on Saturday night.
Brad said in a piece-to-camera that he was devastated to have hurt his partner. (Nine)WATCH: All Stars Andy and Deb prank backyard winners in a hilarious return
Later on, Kristian and Mimi sat next to each other in a piece-to-camera.
"Can you tell me what happened on Saturday night?" a producer asked Mimi, as she took a breath and prepared to tell her side of the story.
Right now it's unknown if Kylie will return to The Block, but during tomorrow's episode Mimi will have her say on what happened.
The Block airs Sunday at 7:00pm and Monday to Wednesday at 7.30pm on Channel 9 and 9Now.
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Stream every episode ever of The Block for free on 9Now.
