Fashion buyer's administrator Millie and bricklayer Liam were one of the early success stories of this year's series, becoming 'official' after a romantic evening in which he gifted her a bracelet saved for a special someone.
However, Casa Amor threw a major spanner in the works as viewers were shocked to see Liam make moves towards new addition Lillie Haynes, who recently told Millie everything that went on between them.
Heartbroken by the betrayal, Millie broke things off with Liam in a tense conversation, telling him that she no longer sees a future with him.
"I personally don't think that I can go forward with this because you've hurt me and I don't trust you," she said. "I feel like you need to just respect that decision."
In the next episode, Liam attempted to win Millie back by flirting with her and, in a conversation with the other girls, she seemed open to the prospect of getting back together down the line – but RadioTimes.com readers say that's the wrong call.
In a Twitter poll, 55.6 per cent said Millie should move on, while 44.4 per cent believed the couple should try to work through their differences.
It's a close result that reflects just how unpredictable this year's Love Island has been, with a number of shocking moments and break-ups sending fans reeling.
Following Millie and Liam's troubles, fans are now predicting that Liberty and Jake could win the series, with a recent RadioTimes.com poll picking them out as strong contenders.