The heart rate challenge was back on Monday night's Love Island: All Stars, and it proved to be the most shocking yet. A fixture of the ITV2 show since 2018, the challenge sees the villa girls slip into a string of scantily-clad looks to set pulses racing, while the boys hope to do the same by oiling up and stripping off. This series there were two stand-out stars with couple Ekin-Su Culculoglu and Curtis Pritchard shocking viewers with their moves.

As the last girl took the stage to show off her moves and get the boys' hearts racing, Ekin-Su, 30, made an entrance in a revealing red lingerie set. Ekin-Su made sure to give each boy a moment to remember, but it was when she reached her beau Curtis, 28, that things got extra steamy. The couple proceeded to kiss passionately on the villa floor, in a world of their own as their co-stars screamed. Later, professional dancer Curtis revived his samba outfit from his original series, giving a dazzling dance performance, before things get heated with Ekin-Su.

Flipping Ekin upside down with ease, the two mimicked a racy sex act, to the shock of their fellow islanders and viewers at home. The heart rate challenge was back on Monday night's Love Island: All Stars , and it proved to be the raciest one yet as Ekin-Su and Curtis got very raunchy. Curtis gave a dazzling dance performance, before things get heated with Ekin-Su. Flipping her upside down with ease, the two mimicked a racy sex act, to the shock of their fellow islanders.

'How was ekin su and curtis’ heart rate challenges allowed on national tv,' begged one fan on X, formerly known as Twitter. 'Curtis & Ekin are in their own porno at this stage,' agreed another. Other outraged comments included:'Bloody hell, all this dry humping between Curtis and Ekin . Jeez!'; 'If Ekin and Curtis end up in the Hideaway, I think we all know what is gonna happen between them'. 'Oh my god not ekin and curtis in the 69 position'; 'do ekin and curtis forget that the whole villa is watching them yet alone their on TV'; 'ekin and curtis need to stop this immediately they’re like horny teenagers'.

In the heat of the challenge, Ekin also kissed Sammy Root, which didn’t go down well with Elma Pazar as she had agreed not to kiss her man during the challenge. Unimpressed with her actions, viewers took to X, formerly Twitter, and shared their thoughts. They said: 'Naaa that was uncomfortable,'. 'The most embarrassing, cringe thing about love island,'. Meanwhile fans have already picked their winning couple, with weeks of the show still left to go - and it's all thanks to the Heart Rate Challenge.

Fans of the ITV show flocked to X on Monday night to declare their champions after the raunchy challenge returned to screens. Ekin-Su made sure to give each boy a moment to remember, but it was when she reached her beau Curtis that things got extra steamy. 'How was ekin su and curtis’ heart rate challenges allowed on national tv,' begged one fan on X, formerly known as Twitter. 'Curtis & Ekin are in their own porno at this stage,' agreed another.

As the last girl took the stage to show off her moves and get the boys' hearts racing, Ekin-Su , 30, made a stunning entrance in a revealing red lingerie set. Later, professional dancer Curtis revived his samba outfit from his original series. Ekin and Curtis' fellow Islanders were left in shock at their antics, swiftly moving away from the couple, who were in a world of their own. Ronnie Vint and Harriett Blackmore's passionate performance left fans 'crying with laughter,' and insisting they 'need to win'.

The Heart Rate Challenge is one of Love Island's most iconic tasks, with viewers tuning in every year to watch the Islanders put on their sexiest performances. And this year during the iconic X-rated episode, Essex lad Ronnie, 28, and his ex Harriett, 24, stole the show. The brunette beauty walked him across the firepit like a dog, before he then struggled to rip his leather trousers off, leaving fans in stitches.

Other outraged comments included:'Bloody hell, all this dry humping between Curtis and Ekin . Jeez!'. Rushing to X, viewers wrote:  'I AM F****** DEAD. MY F****** WINNERS MAN #loveisland #allstars.'. 'They are my winners just from this alone.'. 'He is my winner, I don’t care anymore #LoveIslandAllStars #LoveIsland.'. And it's not just fans who think the duo have a good chance, as betting experts at William Hill have them near the top of their list - although there are a few couples ahead of them according to the bookies.

Luca Bish (7/4) and Grace Jackson (2/1) are current favourites, followed by Elma Pazar (10/3), Sammy Root (3/1), Gabby Allen (11/2) and Casey O'Gorman (5/1). Harriett and Ronnie are at a stable fourth place on the list, with odds of 7/1 and 6/1. Love Island: All Stars airs on ITV2 at 9pm. GABBY ALLEN. AGE:  32. SERIES 3 LOVE ISLAND. Why do you want to return to Love Island?. Because it's the trenches out there! I feel like I have all my ducks in a row, it has been 8 years since I went into the Villa. I now run my businesses and I've grown up a lot… but I just haven't found 'the one' yet.