MARRIED At First Sight's Amy revealed the crude comment ex-husband Luke sent her on her birthday - leaving viewers in shock.
The couple parted ways at last night's final vows with Amy brutally declaring their marriage "deceased".
Upset Luke didn't lose hope though and sent Amy a turtle broach for a birthday gift after the show.
He told the boys that if she attended the reunion wearing it there could be hope for them to rekindle things, but if she didn't then it would appear to be game over.
Needless to say, Amy didn't wear the jewellery and coolly dismissed the present, with some viewers branding her cruel and cold.
However, when she revealed just why she was so angry with him, opinion shifted.
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He allegedly sent her a note accompanying the gift, with a very concerning final line.
Amy recalled the contents of the letter: "I've been thinking about you. I miss you. I miss waking up next to you.
"It said 'I keep saying no regrets. I keep having one regret. When you were cooking I wish I got down on my knees and terrorised your b*****e."
"After that he said 'PS write to me. I'd like that."
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The comment shocked just about everyone, with the experts branding it "inappropriate".
Relationship expert Charlene Douglas said: "If Luke wants to win back Amy, he hasn't gone about it the right way. She's made it very clear she doesn't like that sexual language."
Amy then said: "I feel like I'm looking like a d***head being mean, but I'm sick of it, and that's why at the final vows I thought f**k this."
Viewers voiced their opinions on X, with one writing: "Luke, bro, no. You can't tell someone you regret not 'terrorising their b*****e'"
Another said: "I’d have phoned the police."
A third wrote: "Why are men like this swear to god?"
A fourth said: "the b*****e comment is diabolical behaviour WHAT."
Later in the episode, Amy asked Luke why he felt the relationship failed, to which he said "he hurt her trust badly" and they "misunderstood each other".
Amy then thanked him for "owning that".