MAFS UK hit by biggest scandal yet as groom admits kissing someone else's wife

was thrown into chaos last night after two couples dramatically quit the show.

Viewers saw tensions rise as Hannah and Stephen finally called time on their tumultuous marriage. Meanwhile, it was revealed that Orson had cheated - and he admitting kissing Hannah behind wife Richelle's back.

During the Commitment Ceremony, the cheating scandal came out - and Lacey announced to the group that she knew Orson and Hannah had kissed after getting close on the couple's retreat, which was plagued by a series of fiery arguments.

Orson dropped the bombshell: "On the last night of the retreat me and Hannah were speaking and we shared a kiss. There was a little connection there. I'm not going to lie. What I had was done, I knew what she was in was done, so honestly I didn't feel like I was walking on anybody's toes or disrespecting anyone."

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Expert Mel asked: "What impact did you think that had on Richelle?" to which Orson fired back: "If I'm being totally honest Mel, and this might come across wrong, I didn't really care about Richelle in that moment."

As Orson's confession shocked the group, it got even more heated when Richelle gave the verdict on her doomed marriage, as she chose to leave the experiment. Branding her husband "desperate", she claimed he wanted to stay in the process "by any means necessary".

She fumed: "He saw an opportunity with Hannah to recouple and stay in the process. He jumped at it. You're an embarrassment to yourself at this point.

"Before I came into this process I asked for a strong, intelligent man who has a bit of integrity, and I haven't found that in Orson at all. I find him quite weak-willed, you really aren't as sharp as you think you are.

"It's pretty obvious I think to most people that you're a bit simple. He definitely lacks any shred of integrity. So, one week too late, but it's obvious - leave."

Revealing he had also chosen to leave, Orson hit back: "I feel like I was trying and trying and trying. It was just like squeezing blood from a stone. Just get me out of here please," he swiped, after writing on his piece of paper: "Leave now."

And the cheating rumours had already reached Hannah's husband Stephen, who told the relationship coaches: "All I'm hearing is she's trying it on with everyone's husband. It's just making me completely check out more. I will never deny the fact that our wedding day was special. But my mindset is very much now, I don't want to be your man."

Revealing he was also quitting the show, he told Hannah: "I don't think you're in it for me. I think you're in it for... I don't know what the reasons are and why you're here. So for those reasons, I'm going to leave."

Then it was time to hear from Hannah herself, who told the group: "I think this is probably my opportunity to try and leave this process as amicably as I can with everybody. As much as whatever's happened, happened, I do think deep down you are a good guy and you'll make someone happy. It's meant to be about marriage and ours hasn't worked so I am going to leave."

And there's more drama tonight in Love/Hate week, with all of the couples getting brutally honest about what they like and don't like about their partners. There is also a bust up between one of the show's strongest couples and a shock revelation from Holly, who confesses to a crying Lacey that she's "going home", telling the cameras "get me out of here."

*MAFS UK continues tonight at 9pm on E4

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