MAFS viewers in shock as Ella and JJ return in dramatic retreat episode

MARRIED At First Sight viewers were left stunned as Ella Morgan Clark and JJ Slater returned to the show tonight.

Viewers on E4 couldn't believe what they saw when the two contestants who were engaging in an affair and were sent home returned.

Tonight's episode saw all of the couples go on a countryside retreat together.

The experts wanted to see if they could spend time apart and with others outside of their relationships.

Things appeared to be going well as the couples relaxed and enjoyed their time away.

But they were soon interrupted by two guests who arrived.

None of the couple's were prepared for the shock of the night.

Ella and JJ made their explosive comeback, as they walked hand in hand before splitting up to face the boys and girls.

Ella was first to stroll through the door just as the girls and Mark were enjoying their prosecco and afternoon tea while chatting about their guys.

"I'm back, b*****s!" exclaimed Ella.

Tasha, Jay, Peggy, Ros, and Laura were thrilled to see Ella, as they got up from their chairs to greet her.

But Erica and Adrienne weren't happy and chose to not get up.

"What is she doing here? This is absolute bulls***," Erica told the camera.

JJ later showed up while the boys were having a heart-to-heart over some beers.

"Oh my God," Georges shouted after seeing JJ.

However, Erica's husband Jordan, crossed his arms and looked annoyed.

Viewers were unimpressed with the duo's comeback and rushed to X/Twitter to express their disapproval.

One wrote: "What is bringing Ella and JJ going to achieve, bye man."

A second added: "No way!! Why have they brought Ella and JJ back?"

A third raged: "That's p****d me off! Can't stand them."

A fourth wrote: "Ella and JJ are a joke."

A fifth added: "There's no reason to bring these two back, ridiculous."

Married At First Sight airs on E4 weekdays at 9pm