Love Island: All Stars viewers were left in shock on Monday night when Gabby Allen and Casey O’Gorman were announced as the winners of season two.

The couple had flown under the radar in the leadup to the finale, with bookmakers never placing them as favourites to clinch the £50,000 prize.

Nonetheless, they managed to storm to victory during the live final – pipping longtime frontrunners Luca Bish and Grace Jackson to the post while Ekin-Su Cülcüloğlu and Curtis Pritchard finished in third.

Some even questioned if the result was rigged, with Gabby, 33, and Casey, 28, having been devoid of public sentiment online – SlotsCalendar’s data revealed that only six percent of tweets about the couple since they paired up had been positive.

While social media users were baffled at the result, it has resulted in bookmakers paying out thousands, because of a third of the stakes were placed on the underdogs.

William Hill spokesperson Lee Phelps told MailOnline: ‘Gabby and Casey’s Love Island All Stars victory last night may have appeared a shock on paper, but the result ended up being a big loser for us, with the couple accounting for over a third (35 percent) of stakes throughout the series.’

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Love Island: All Stars viewers were left in shock on Monday night when underdogs Gabby Allen and Casey O’Gorman were announced as the winners of season two

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For weeks, Luca Bish, 25, and Grace Jackson, 26, had been the bookies’ frontrunners to win the show – garnering a strong online fanbase

He continued: ‘While the pair started out as an unlikely 10/1 towards the end of January, our punters appeared to have their heads turned in early February and their price dropped to as low as 4/7 at one point – the shortest odds offered at any stage of the series.

‘Gabby and Casey entered last night’s finale as 6/4 second favourites but proved to be the real bombshells of the series, stealing the crown from Luca and Grace (1/2).’

Speaking to MailOnline, FruitySlots.com’s Jamie Rosen added: ‘Casey and Gabby’s victory in Love Island All Stars 2025 has taken the nation by surprise, and it’s safe to say that the bookies also did not see this coming.

‘As the ultimate underdogs at 4/1, they defied the odds and caused a huge upset to get their hands on the £50,000 cash prize and prove that anything can happen in the world of reality TV.

‘The bookies had all but written them off, with reality TV betting experts making Luca Bish and Grace Jackson the hot favourites to win at odds of 11/10, making them clear favourites heading into the highly-anticipated final.

‘But what could have led to this outcome? It was clear that Casey and Gabby’s journey, chemistry, and authenticity struck a chord with viewers across the country, making it third time lucky for Casey, as he made his third appearance as a Islander on the show.

‘The bookies will be left facing a big payout to anyone who had the foresight and saw this shock result coming. The odds were stacked against Casey and Gabby for most of the season meaning their supporters will have won thousands at the bookies’ expense.

‘It also highlights just how unpredictable the outcome of Love Island can be, and could impact future betting trends for reality TV shows, where the experts calculating the odds will think twice before writing anyone off as a complete underdog.

‘Casey and Gabby’s win is a reminder that in the Love Island villa, love and authenticity always have a place at the top, no matter what the odds say.’

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The tide turned on Luca and Grace when former Islander Olivia Hawkins claimed to have seen ‘secret messages’ proving Grace only after a fake relationship

For weeks, season eight’s Luca, 25, and season 11 star Grace, 26, had been the bookies’ frontrunners to win the show – garnering a strong online fanbase.

Yet the tide turned on the couple in the crucial few days building up to the final after they were ‘sabotaged’ by former Islanders.

During Sunday night’s show, the axed stars returned to the villa to decide which couple would be dumped before the final.

Amid their deliberations, Olivia Hawkins set the cat among the pigeons as she claimed to have seen ‘secret messages’ proving Grace only after a fake relationship.

In a shock outburst, she announced: ‘So I’ve seen text messages of Grace just saying to someone that she’ll do whatever it takes to win the show this time from someone back home’.

A horrified Grace denied it immediately and pleaded with Luca: ‘Baby, that is absolutely not true. I do not care about winning this show’.

Yet tensions continued as Samie Elishi, who competed with Grace for Luca’s affections, also claimed to have seen the infamous messages.

Grace fumed: ‘On my life, I have never written that sentence in my life. It’s b******t, and someone’s forged that, that’s not true. I am gobsmacked’.

Olivia’s rival Harriet Blackmore was quick to chime in and told Grace: ‘She probably made it up babe, like she did with Ronnie.’

She added: ‘Liv’s probably texted herself and used it as an answer. Babe, we all know you wouldn’t do that.’

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Casey and Gabby had flown under the radar in the leadup to the finale, with bookmakers never placing them as favourites to clinch the prize (pictured with Ronnie Vint and Maya Jama)

Following the episode, alleged screengrabs of the conversation began to circulate online but were not verified.

Back in the villa on Monday for the live final, Olivia was probed about the messages by host Maya Jama, who asked if she had the screenshots to hand.

However, the dumped Islander seemed keen to backtrack after her fiery confrontation with Grace and Luca the day before.

She said: ‘I’ve seen [the screenshots], I’ve said what I’ve said. You know me, I’m very straight to the point. I wish them the best.’

However, showing there was still no love lost between then, Grace took the opportunity to make her feelings clear in response.

She fired back: ‘I’m very straight talking too and there’s absolutely no receipts so I can’t wait to apparently see them.’

As the audience clapped and the tension built, Maya jumped in to joke: ‘Ok – you can sort it out online or something.’

Taking to X amid the debacle, fans tweeted: ‘The ex islanders sabotaged luca and grace’;

‘Dont you think it’s funny how these so called reciepts and messages were from before she went in the villa but come out the day before the final where she’s close to winning? Giving sabotage #LoveIsland’;

‘Even the devil rested! I haven’t seen people work so hard to sabotage a person like this. Grace is really special because how can a girl get people pressed and shaking in their boots 24/7 by just existing? #loveisland #LoveIslandAllStars’;

‘Trying so hard to sabotage Grace all it does is make us vote more for her. If she wanted to win so much why not help her #loveisland’.

Casey and Gabby have become the second islanders to win All Stars, taking over the crown from Casey’s best mates Tom Clare and Molly Smith, who won season one.