It read: “Hayley, you’re not the only one I kissed! Plenty more secrets. M".
"This is fake, sorry. I know his writing," Stacey commented on the Instagram post. "That's not fair at all, Hayley. You can't forge someone's confession... he is dyslexic. I don't even think much of him right now, but this is weirdly desperate and low."
Hayley hit back, writing: "How desperate, Stacey, saying I forged [Michael's] confession letter... you are a terrible supposed lawyer. I thought you didn't argue with fact? You best shut up and get your facts right before you point the finger again."
Many people took Stacey's side in the matter, forcing Hayeley to get the #receipts.
"For anyone that cares, I contacted the radio station this was on and they're calling me back in five minutes. I’m also sending them what Stacey wrote/ THIS IS FAKE IM SO...."
WELL... Stacey later sent MAFS Funny a note that Michael had left her when they were together, proving the handwriting is completely different.
Later, it was revealed that the radio station set the whole thing up.
Fox FM radio star Fifi Box confirmed her co-host Brendan Fevola wrote the letter.
Speaking about today, they said that they didn't think the joke would turn into a feud.
"The ultimate prankster Brendan has written the note. This is a problem because there's one person who is going to be furious with us... Hayley."
Hayley called the show, ripping into the hosts for their prank. "Fev I am going to kill you, you little shit. I will tell you what has happened in the interim. I sent it to MAFS Funny saying 'this is his admission, I've got the guy! He's a pot-stirrer, I told you he hooked up with other people.'
"And then Stacey replies back saying it's fake and then I start writing back to her saying she was pointing the finger at Hayley. We're in this full-blown war because of you. You're lucky I love you so much," she said, admitting it was a little funny.
The war has stemmed from the fact that Michael Goonan cheated on Stacey with Hayley while filming the show. It led to both marriages breaking up.