"No I'm not, sorry" Laundy confirmed when asked by Kyle Sandilands if he was sleeping with Irvin.
"She's an awesome girl, you would've seen it on TV, we've become good buddies. She's actually like a little sister," Laundy, who dated Sophie Monk, explained.
The 44-year-old revealed that Irvin had reached out to him for a drink via Instagram, so he invited her along to one of his many pubs.
"I was going to be there on the Friday night...so I said 'come along'".
When pressed further by Jackie O, Laundy said that her young age was a factor.
"She's 25 years old or something, I have a 16 year old daughter, it's just getting too close to comfort."
Irvin was set up with Troy Delmege on the Channel 9 dating show, but when their romance ended he started a relationship with fellow MAFS contestant Carly Bower.
Laundy has not been linked to anyone romantically since his split from Monk.
This article originally appeared on WHO.