LOVE Island fans think they have "worked out" the "real reason" that Millie Court and Liam Reardon have split up.
Viewers of the ITV2 dating show speculated that it had "opened old wounds" between the couple as dramatic scenes from Casa Amor were aired on TV last week.
Love Island viewers watched on as some of the current boys appeared to make similar moves as Liam, 22, had done last summer.
Despite being coupled up with Millie, 25, since the start of the show, the Welshman didn't stay faithful to his partner in Casa Amor.
He was quick to share a steamy snog with bombshell Lillie Haynes, while Millie remained loyal to her beau in the villa.
His actions were revealed in a devastating postcard, which showed him locking lips with the blonde bombshell in a horrific twist.
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After a grovelling apology, Millie and Liam were eventually reconciled and appeared to put the mishap behind them.
The couple went on to bag the £50,000 as they were crowned the winners of the show - beating Chloe Burrows and Toby Aromolaran.
Today, the couple announced they had split after a year together - and as the latest round of Casa Amor drama aired.
A number of the boys appeared to play the same game as Liam, as Andrew Le Page, Jacques O'Neill and Dami Hope all went on to kiss other girls in the second villa.
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Fans think that if the couple had been watching this year's series, it no doubt brought up bad memories from their time on the show.
"Millie and Liam breaking up just after Casa Amor showing her exactly what he did? Surely not a coincidence," one said.
Another chimed in: "Millie and Liam broke up? Yeah, that Casa Amor season opened some old wounds."
"Millie and Liam have broken up? I swear it was watching this year’s Casa Amor that did it," a third fan agreed.
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While a fourth said: "Liam and Millie broke up, this year’s Casa Amor must have brought back past traumas."
It comes after Millie and Liam announced they had split up in two emotional Instagram stories posts.
"It's been a tough decision and I am gutted but it's ultimately what is best for us right now. Thank you to every single one of you for supporting our relationship," Millie wrote.
"Nothing will ever take away from the amazing experience we shared in Love Island and the past year and I wish Liam all the best in everything he does.
"We're both ready for new chapters and I'm excited for what's next. Love, Millie."
The couple last appeared together on social media two weeks ago, cuddling up on holiday in Portugal.
Despite looking loved-up, fans were already speculating something wasn't right as they'd been seen together publicly less and less.
A source has now told the that the pair had been growing apart for some time.
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They said: "It's been really hard for both Millie and Liam to come to this decision but after weeks of growing apart, they have come to the conclusion it's the best thing for them both.
"There has been no drama or wrongdoing and they both still fully support each other and will remain close friends."