The couple met inside the Love Island villa earlier this summer and have been joined at the hip ever since.
A source said: “They came out to a whirlwind of publicity and after a while, things started to get to them and the cracks appeared.”
They added to The Sun: “They are both incredibly busy and they have decided to call time on their romance.”
Jack previously admitted that their relationship wasn’t perfect and that filming their upcoming reality show and living together had made things harder.
The Essex lad said: “Filming the show wasn’t easy. It was tough, it was intense – you’re on camera most days of the week all day long.
“We had bickers during filming just like any other couple. I got emotional with Dani doing it; I even had a couple of tear ups. But Dani and I got through it.”
Jack and Dani were together for just 129 days.
Neither of the TV stars have commented on the claims.
In a seriously awkward turn of events, just days ago Jack and Dani were confirmed as social media hosts at the 2019 National Television Awards.
It is not yet known if they will still honour the agreement.
Sadly, Jack and Dani aren’t the first couple to split from their year’s show.
In fact, only three of the couples remain together which are Josh Denzel and Kaz Crossley, Megan Barton-Hanson and Wes Nelson and Adam Collard and Zara McDermott.