Everyone seems stunned by her revelation, especially Cass Wood, who came third on Nick's season.
"I was not expecting that at all," Cass later tells producers. I was actually completely shocked."
Brooke later adds: "He told me not to tell anyone. He's going to hate me for this."
The youth worker isn't the only Paradise resident set to drop a bombshell on the upcoming season.
Former Bachelor Richie Strahan and ex-girlfriend Alex Nation will reunite for the first time on the show — and hopefully shed some light on where their romance went wrong.
In a teaser released last week, Richie hints at their "brutal" split.
"I was obviously in a relationship with Alex and, well, the circumstances of that breakup were quite brutal," Richie explains.
"I don't know if Australia's ready for the grubby details surrounding it."
Richie, 33, chose mum-of-one Alex as his winner back in 2016, but the pair left fans devastated when they split the following August.
In the new video, Alex adds to the tension by telling the cameras: "Richie and I do not talk anymore, and I do not want to meet him in paradise. Oh my god, what have I done?"
Former Bachelor "mean girls" Cat Henesy and Alisha Aitken-Radburn will also be appearing on the second season of Paradise, along with series alums Florence Alexander and Bill Goldsmith.
The rest of the cast is yet to be announced.
