Grant threatens to sue Keira over that 'threesome' rumour, and this escalated quickly.

Former Bachelor in Paradise star Grant Kemp has threatened to sue former cast mate Keira Maguire after she admitted to spreading a false rumour regarding why he and Ali broke up.

On Monday, and in an interview with Kyle and Jackie O, Keira said she deliberately leaked a rumour alleging Grant and Ali broke up after he propositioned her for a threesome, to “protect” Australia’s newest Bachelorette.

“I’m the one that started the threesome one, because I knew what actually happened and I didn’t want it to come out, so I started the threesome rumours,” she said.

“I told someone who I knew would talk to the tabloids to protect her. Girl code.”

Talking to The Daily Mail on Tuesday, Kemp told the publication Keira “will be hearing from [his] lawyer”.

A post shared by KEIRA (@keiramaguire) on Jun 2, 2018 at 7:26pm PDT

“She had no business even saying anything. The fact that she put a fake story out knowing that there’s concrete proof that I walked in on Ali cheating on me is completely out of control.”

Last month, also in an interview with Kyle and Jackie O, Kemp told the program the couple actually broke up because she cheated on him.

“I walked in with my friend Sabrina – who witnessed this whole thing – sees him going down on her on my stairs, so I kicked her out of my house that night,” he told the hosts.

“I was shocked, I mean I didn’t even know what to think at the time … I was like, ‘You need to get all your stuff in your suitcase now and leave.’”

“She was like, ‘Please, please I hate myself for this, I’m so sorry I can’t believe I did this.’ … It’s like, ‘Dude you did it, I don’t care if you were drunk or not, that’s no excuse.”