MAFS EXCLUSIVE: Tim spotted kissing secret girlfriend amid 'cheating' rumours

Warning: This article contains spoilers about MAFS!

Married At First Sight's Tim Calwell committed to staying another week in the experiment with his ‘wife’ Sara Mesa during Sunday night’s episode, but it appears the couple are no longer together in the real world.

Yahoo Lifestyle has obtained exclusive photos of Tim kissing a mystery Brazilian bombshell amid rumours he's part of a cheating scandal on the show.

The images taken on February 1 on the Gold Coast show the pair kissing on the street after spending the day running errands together.

What are the cheating rumours involving Tim?

Radio host Kyle Sandilands revealed on The Kyle & Jackie O Show last week that he'd heard from “multiple people” in Queensland that Tim was now in a relationship with a Brazilian woman - and suggested that he was texting her or potentially dating her throughout the experiment.

Sara, who was being interviewed on the radio show, remained tight-lipped when asked if she knew about Tim’s mystery woman.

“It might’ve been an ex,” she said. “I actually can’t remember if the ex was Italian or Brazilian.”

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Speaking to Yahoo Lifestyle about Kyle’s comments, Tim denied having a romantic relationship with the mystery woman during filming and said he was “100% faithful to Sara”.

“The only person I was romantically involved with during the experiment was Sara, which is more than I can say about others,” he said.

He added that “there will be a cheating scandal later in the season”, however, it won’t be about him.

Who is Tim's mystery woman?

A source tells Yahoo Lifestyle that Tim was “briefly seeing” the woman, who is an architect named Barbara, before filming the show and they “got back together a week after he split from Sara”.

The insider adds that the accusations around Tim and Barbara’s relationship started once filming wrapped, which means they won't be addressed on the show.

This comes after it was revealed that Ellie Dix and Jono McCullough are now in a relationship after doing a 'couple swap' and will reportedly attend the reunion together.

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