The couple originally decided to separate back in April, earlier this year, but managed to get their relationship back on track.
It was only two months ago that Chloe and Stevi had a wedding blessing back in July, but reports are now claiming the pair have called time on their romance yet again.
According to The Sun, Stevi and Chloe's split comes after Chloe 'didn't turn up' for his birthday celebrations and the pair haven't spoken since.
A source told the paper: "Stevi and Chloe have split up again. He was absolutely devastated when she stood him up on his birthday... he hasn't heard a word from her in that time, he's so upset."
When contacted by Reveal a rep for Stevi declined to comment. We have also contacted a rep for Chloe.
The duo initially met while starring on The X Factor together back in 2014. They began dating once the series had wrapped, and went on to announce their engagement the following year.
Instead of tying the knot back in July, Stevi and Chloe opted to have a commitment ceremony. They had chosen not to get married, as Chloe explained her parents didn't agree with Stevi not having his own house in an interview with OK!.
She also added that Stevi had to "earn her family's trust" back before they could tie the knot, following their brief split earlier this year.
At the time of their wedding blessing, Chloe had explained its purpose. She said: "It's a promise that we're going to get married. It will only put good vibes into our relationship after all the sh*t we've been through."
Stevi, meanwhile, gushed: "Chloe cried and then I had a tear in my eye. She looked gorgeous. It was quite emotional. We feel closer than ever. We're so in love and we've been through so much."
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