The former couple, who dated for three years on the outside before splitting in September, are currently paired with Tom Clare and Jess Gale respectively.

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But on tonight’s show they unite to make a romantic breakfast for their partners – and viewers think they might actually have had an ulterior motive.

One person speculated: “Molly and Calum working hard at setting Jess & Tom up.”

A second said:  “Are Callum and Molly setting twin and Tom up.”

While a third remarked:  “I’m starting to believe Molly and Callum have a game plan.”

Fans of the dating show were initially suspicious of whether the pair’s split was genuine.

But over the last few weeks, viewers of All Stars have become obsessed with the idea they will get back together and want to see it happen before the series ends.

And tonight’s breakfast making has added further fuel to speculation they could end up reuniting.

As they got close in the kitchen, Callum said to Molly: “Who would have thought we’d be making breakfast not for each other, but someone else….”

Later tucking into their french toast, Callum said to Tom: “I bet you thought when you come in the kitchen what are them two doing together?”

Tom joked: “Those guys are back together…”