They are Married At First Sight Australia’s Tamara Joy and Ibiza Weekender‘s Callum Izzard, 17.
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A representative for the show declined to comment.
Tamara, 34, appeared on the 2018 series of MAFS Australia and had viewers hooked after she was cruelly cheated on by ‘husband’ Dan Webb with Jessika Power.
Callum is also ready to delve into his love life once more having previously starred on Celebs Go Dating – where he confessed to sleeping with 250 women.
The pair are set to confront their exes in an exotic location on the MTV show.
And it won’t be the first time Callum has taken part in the explosive series.
The reality star, from Doncaster, first took part in 2021 after a bitter split from his former fiancée and Love Islander Georgia Steel.
The reality TV pair met while filming MTV’s Ex on the Beach spin-off Peak of Love in the US and got engaged a month later.
But they called time on the relationship in lockdown after seven months.
He said afterwards: “Nothing bad happened to end the relationship. There was no cheating.”
Taking a swipe, the tattooed star added: “I’ll be honest, I’m just a clever person and she’s not.
“Imagine trying to talk to somebody, imagine trying to argue with somebody, conversate with somebody who doesn’t compete on your level intellectually.
“After a while it starts to fade, the looks aren’t there anymore and I can’t do it, man. Add that with living together with someone in a confined thing because we’re in lockdown.
“I hate running but I was going on hour, two hour long runs every day just to get out of the house. One day, she goes, ‘Can I come on the runs?’ I was like, ‘F–k no’.”
Following their split he dated Towie beauty Ella Rae Wise but they suffered the same fate, ending things in December last year.
However he said the break-up “stung” because Ella told him off for going public with their romance.
He told The Sun last year: “I thought she’d be really happy, but actually she said ‘why’ve you done that.’
“She told me she has a lot of TV stuff to do and so then we got into a big argument and I thought am I an idiot?
“We’d been dating for four months and if she wanted to still do TV stuff then she could’ve told me that four months ago.”
Tamara and Callum’s signing comes after The Sun revealed a Towie star, and Love Island legend had joined the line-up.
The show sees reality stars live in a villa, where they must come face to face with their ex partners.
Past celebs who have taken part include Joey Essex and Megan Barton-Hanson.
The Sun has contacted a rep for Ex On The Beach broadcaster MTV.