Now Cyrell herself has confirmed the allegations.
AND SHE HAS NAMED THE BRIDE.
First, you need to listen to Ivan's claims about Nic and how the MAFS producers are protecting him.
Cyrell decided to comment on an Instagram post about her brother made by MAFS.
The show tried to make a joke about Ivan, to which Nic replied with laughing emojis.
But Cyclone Cyrell wasn't having it.
Naming Jessika Power, Cyrell commented: "It's hilarious huh Nic... Just as funny as you flirting around with Jess."
She then posted on another photo that her hubby is "a huge mistake."
What do we know so far?
The protective big bro has called into Fitzy and Wippa's radio show to slam the groom as a cheater
"He and I both know what's going on behind closed doors," he said on air.
"He's not an angel."