In Thursday night's episode of Bride and Prejudice, Dannii and Denton's relationship almost ended after it was revealed that Dannii had cheated on him.
WATCH: Bride and Prejudice: Dannii admits to cheating on Denton
"Your sister told me you slept your way around New Zealand!" Denton said to Dannii during a confrontational moment.
"I'm sorry," she said, before continuing, "I didn't sleep with anyone else apart from the one particular person."
"You deserve to know," she added.
"You know what pisses me off?" Denton bit back.
"We don't have sex more than once a month, but yet you have sex with some other guy. Do you know how s**t I feel?"
Denton then walked out of the room in anger, threatening to leave the set of Bride and Prejudice altogether.
"I'm f***ing done, I don't want to f***ing be here!" he snapped.
The first sign that the couple were having problems came earlier in the episode, when Dannii revealed that Denton had only lasted fifteen seconds while they made love for the first time in a month.
"I think the next time we have sex, I know it's hard for you, but try and last a little bit longer," she said after they slept together.
"I start to enjoy it and then all of a sudden you're done."
Dannii also revealed that she hadn't had an orgasm in six months due to Denton's premature ejaculations.