Jesy and Rixton singer Jake, who got engaged while being serenaded by Ed Sheeran last year, sparked break-up rumours after she unfollowed him on Instagram.
Neither of the pair's reps have commented on the whispers, however sources have now claimed the couple had a big row before calling it quits.
An insider told The Sun: "Jesy and Jake had a huge barney - it wasn't pretty.
"They're not a couple who avoid rows easily but this was different and could signal the end of their relationship."
Reveal has contacted Jake's rep. Jesy's has declined to comment.
Rumours of a 'Jakesy' split first began circulating on Tuesday night (8 November) after eagle-eyed fans spotted that Jesy had unfollowed Jake on social media.
Their followers were quick to comment, with many asking Jesy the reason behind her snub. Other more dramatic fans declared: "If [Jake] broke up with Jesy, love doesn't exist."
Two years ago, Jesy and Jake began dating after meeting at the Manchester Arena. In July last year, Jake returned to the venue and proposed to Jesy on the stage while Ed Sheeran serenaded them.
Gushing at the time, Jake tweeted: "A year ago today I met her at Manchester Arena, so it was only right, with a little help from my friend, that this happened. Best day of my life."
Soon after Jesy declared to Jake that she "loves him so much it hurts". She has also spoken about her plans for an intimate wedding.
Jake's mum, Loose Women panelist Coleen Nolan, has also regularly chatted about Jesy becoming her daughter-in-law.
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