There was no spark from the start, but it seems Billy never stood a chance with Susie… because she was already dating a famous footballer – Todd Carney.
"She was texting Todd from day one," a source tells Woman's Day. "She was so blatant about it. She'd go out into the fire stairwell late at night to call him for hours on end."
The source also reveals Billy caught Susie and Todd exchanging "graphic" images.
"She asked Billy to pass her ringing phone and he saw Todd's name. Another time, he saw messages from a male and let's just say they were not G-rated!"
WATCH: Billy unleashes on Susie's friends. Post continues after video...
In photos exclusively obtained by Woman's Day, 25-year-old Susie was seen leaving The Stamford Plaza hotel in her native Brisbane with Todd, 32, who then dropped her off at work.
The pair have also been spotted flirting up a storm on Instagram, with Susie referring to Todd as "Mr Carney" and her "baby."
Carney's mum Leanne also recently posted a picture to Facebook of Susie joining Todd and his family for a shared dinner in Byron Bay.
Just weeks ago, Susie's on-screen husband spoke to the Daily Telegraph about the photos of Susie and Todd.
"What can I say? That's a really hard one for me, I've got mixed feelings about that. You can really see Susie's judge of character by the people that she hangs out with," he said.
It seems like Billy could have gone on to say a lot more, but according to the publication, he was cut off mid-way through by a MAFS publicist.