"After being told off at the girls' night for trying to tell them on camera why I really left [the show], I decided come reunion that I would shut my mouth and get along with Luke," she began.
"But the next day was the finale on the couch and I couldn't handle it anymore. I confronted him in the tent about a few things, mainly the fact he got away scot-free with everything," she added. "I was really upset and uncomfortable... It was a very heated argument."
Poppy has been extremely vocal online about her hatred towards ex-husband Luke, claiming she was "dragged out" of the girls' night for "spilling her guts" about the "terrifying" incident that left her traumatised.
"The times I had said what he did on camera was never going to be shown," she said during an Instagram live. "The girls started asking me questions about why I left and I started to get upset on camera. Then I got dragged out, told off, and wasn't allowed to talk about what happened with Luke because it was too controversial. I could never say my truth."
Following her lengthy rant, she tore into Luke for "gaslighting" her, telling her followers that even his friends and family had been slamming him behind his back.
"I have had messages from his ex-wife, his ex-girlfriend, and someone he works with, all saying he's a dick," the mum-of-two said. "He gaslighted me completely. I was scared shitless."
Poppy also lifted the lid on MAFS showrunners covering up what happened to her, claiming they threatened to alter her portrayal if she admitted why she decided to quit the experiment.
"I was so scared I was saying sh*t like, 'this could work' because they [producers] told me Australia was going to f***ing hate me. F**k, I'd probably hate me too! From what I heard that's all they play of me!"
"I couldn't say what was happening behind the scenes as it was too controversial. Why is Luke crying when I left??? Go and ask Luke why I was so uncomfortable????? Why the f**k did I really leave?? He's petrified I am going to talk. He knows he f***ed up. Those tears from him are for his reputation and job!"
In a brutal Facebook rant, she also lifted the lid on what he was like when they were alone together.
"I was matched with someone who cheated on his wife, didn't live in the same state and wasn't dad of the year by any means," she said, calling Luke's character into question. "The experts never met him!!! He was fake on camera and a complete dick behind the scenes! It was infuriating.
"I was uncomfortable with all the things about this person I was matched with that didn't add up. But I was told, 'Poppy, on camera and off camera doesn't exist to the public.'"