LOVE Island fans claimed the cast 'completely switched' on Ekin-Su and Curtis - leaving them certain the producers stepped in.
Viewers have seen both Ekin and Curtis feud with Elma Pazar in recent episodes.
In Thursday's instalment, the couple were crowned winners of the talent show - as picked by their castmates.
Elma was even spotted clapping for rival Ekin moments after she finished playing the piano.
Eagle-eyed fans are suspicious over apparent changed behaviour from ALL the islanders.
Sharing their thoughts online, a few believed the show's producers had gotten involved in some way.
One wrote on Reddit: "I found it interesting that tonight Ekin and Curtis was cheered on by the islanders and became winners of the talent show, when they’ve been segregated for days by the others who have giggled and smirked at them in unfriendly manners.
"My thoughts are that the producers definitely had a chat with Elma and everyone else because the switch up is uncanny and looks very orchestrated!"
Another penned on X: "After this episode I think Elma has been told by producers cause she is being OVERLY nice #LoveIslandAllStars #loveisland".
The tension stems back to during the heart rate challenge after Ekin-Su decided to give Sammy Root - who is coupled up with Elma - a peck on the lips as she worked to get his pulse racing.
Elma was left fuming and made it clear ever since she is not a fan of Ekin-Su.
Things took a further turn when Curtis overheard Elma chatting to Gabby Allen and Catherine Agbaje - unaware he was listening in.
The Towie star told the girls: “It was never about Ekin, it’s Curtis. He’s been tested and he failed and that’s the bottom line of it.”
Gabby, 33, replies: “Maybe Ekin’s not the problem then…”
And Catherine, 24, adds: “Yes that’s what we’ve concluded.”
Some viewers, however, came up with a whole different theory behind the tension.
Following Ekin's piano performance in the talent show, some fans believed Elma to be "jealous" of her rival.
Taking to social media one said: "Wow Ekin came, saw and SLAYED with that performance.
"Suddenly all Elma’s hatred is making sense.
"She’s jealous of Ekin as the only one with any talent in there - apart from Curtis."
While this one echoed this: "I think Elma is secretly jel of Ekin, and that piano performance would not have helped!"
Love Island continues on ITV2 and ITVX.