The Married At First Sight couples were left utterly shocked after a crude comment from Luke was revealed.
After a dramatic finale, which saw only two of the four remaining couples exchange vows and continue on their romantic journey, the cast of the Channel 4 dating show returned for a reunion.
Despite agreeing to go their separate ways at the vow renewal ceremony, Luke still held out hope that his former bride Amy would give him a second chance.
And during Wednesday's episode he told the grooms that he had written Amy a heartfelt letter begging her to give their marriage another go.
He explained that he had sent her a turtle brooch for her birthday along with the letter and asked her to wear the brooch to the reunion if there was any hope for them.
Amy revealed to several o the brides that Luke had sent her a gift and written her a letter begging for a second chance before revealing the crude comment he made right at the end
As Amy told the other participants about the shocking comment, Luke couldn't keep his eyes off his former partner
Amy revealed Luke signed off his letter by saying: 'I just have one regret - when you were in the kitchen cooking, I wish I had got down on my knees and terrorised your bumhole'
But the former spouse failed to mention the contents of the letter he sent along with the gift.
Instead, it was Amy who revealed what he had written during a conversation with several of the brides.
She told them: 'In the letter it just basically said "I miss you, I miss waking up next to you and laughing with you.
'And then at the end it said "keep slaying, no regrets. But I actually I just have one regret - when you were in the kitchen cooking, I wish I had got down on my knees and terrorised your bumhole."'
After sharing the shocking remark, Sionainn covered her mouth before saying: 'What?' and laughing in shock along with the other brides.
Meanwhile the experts who were watching on all groaned in unison before Mel Schilling put her head on the desk and said: 'Oh no, you did not. What?'.
And it wasn't just the rest of the cast who were left utterly appalled by Luke's comments.
Fans of the show took to social media to express their shock at the vulgar letter, calling it crazy and wondering what possessed him to write it down.
The brides were completely shocked by Amy's revelation, laughing in shock and asking her what he could have been thinking
Meanwhile the experts who were watching on all groaned in unison before Mel Schilling (centre) put her head on the desk and said: 'Oh no, you did not. What?'
Viewers took to X and wrote: 'Luke ?! I like the man but there’s no saving him. That letter!'
''Terrorise your bumhole’ is gonna follow Luke round for years, and rightly so.
'Luke man common that’s crazy to right in a later
'We can’t keep making excuses for Luke, he has a problem
'Luke not only thought of, but WROTE DOWN on paper, the words "I wish I'd terrorised your bumhole" ???? #MAFSUK
'Not the bum hole terrorism Luke
'Did Luke really say that to Amy though..... If so that guy needs help #MAFSUK
'I'm the biggest Luke sympathiser, but "terrorise your bumhole" is absolute crazy talk. Who raised him pls #MAFS #MAFSUK'
Luke's inappropriate comments come after a highly dramatic and emotional series finale where only Sacha and Ross and Nathan and Lacey chose to commit to their marriages.
Fans of the show were also left gobsmacked and took to social media to express their shock at the vulgar letter, calling it crazy and wondering what possessed him to write it down
During their vow renewal Amy and Luke shared a shocking confrontation, after he said he was 'laying my heart bare' and admitting: 'My dream scenario is that me and Amy leave hand in hand and look forward to the future. I hope she gives me that chance.'
During the vows, Luke shared the depth of his feelings for his bride, as he told her: 'This experience has been testing, for all our highs there have been lows. I feel responsible for many of them because of my white lies.
'I felt I damaged our trust and at times I wasn't sure you even liked me and became concerned as to why you were so cold.
'But over time the ice melted and every step you were there protecting me. We have shared the most special moments and I don't want to give up.
'There are many things I have left to work on, but I hope on our journey ahead there will be two footprints in the sand. Amy, I want to stay together, our future starts now'.
However, Amy decided to wear a black wedding dress and veil as she savagely declared she was 'mourning the death of this marriage' and that Luke was not 'worthy' of her.
Luke's inappropriate comments come after a highly dramatic and emotional series finale where only Sacha and Ross and Nathan and Lacey chose to commit to their marriages
At the couple's ceremony, Amy decided to wear a black wedding dress and veil as she savagely declared she was 'mourning the death of this marriage' and that Luke was not 'worthy' of her
She began: 'Luke I joined the experiment to find my forever person. You were my Prince Charming, you showed me you were a gentleman. There's never been a dull day and we've had so many laughs and you've taught me a lot about myself.
'However, I've tried so hard to let my walls down but the continuous lies have stopped our marriage moving forward.
'Marriage is based on trust and you've pushed me to a point I don't believe a word out of your mouth.
'I know my worth and you aren't worthy of me. This marriage is done, dead, deceased. I stand here in black to mourn it's death. RIP.'
As she walked away, a heartbroken Luke making visibly emotional and teary-eyed, telling the cameras: 'I feel empty and a bit lost for words. I don't feel like I deserved all of that, it felt a bit heavy handed, but what can i do?
'My white lies aside, my feelings for Amy will always be. I just wanted someone to accept me for who i am, I wanted Amy to accept me. Clearly Amy is not wanting to have any part of this relationship anymore and it's over for her and me.'
