Earlier today, it appeared that the couple had reunited just days after Carl announced their breakup on social media as he claimed that he called it quits on their engagement because Katie was unfaithful.
However, Carl's latest social media social media post appears to have shut down any sign of the pair getting back together.
In a cryptic post, he penned: "Unless it comes from me on my platform, it's bull****."
It appeared as though Katie and Carl had rekindled their flame in the latest twist of their turbulent relationship as they reportedly stepped out as an item on Wednesday.
The couple looked smitten as they wrapped their arms around one another and kissed in a defiant display of affection.
Following Carl's blistering Instagram post, the pair unfollowed one another on the social media platform but it appeared that there was no animosity between them on Thursday.
The couple who've had a whirlwind romance were seen meeting one another for lunch in West Sussex on Thursday – two days after they allegedly split.
In photos obtained by The Sun, Katie and Carl could be seen leaving a restaurant while walking hand-in-hand, before they passionately wrapped their arms around one another for a hug.
Katie, 44, was sensationally accused by Carl, 34, of cheating on her, with the former Love Island contestant taking to social media to share the news they'd split.
Carl shared a video on his Instagram page, saying he was 'embarrassed' to share the news after Katie reportedly confessed to sleeping with somebody else.
He told his followers: "So, there's no easy way for me to say this and to be honest with you, it's quite embarrassing. But me and Kate, are not together anymore. I found out yesterday that Katie cheated on me. She's admitted that she cheated on me. She slept with somebody else.
"So yeah, that's the end of that. I guess I'm just gonna focus on rebuilding myself and get my life back on track. And concentrating on me but that's done."
The Mirror has reached out to Carl's representatives for comment.