For Cate, swinging is her sport.
While some might play touch football on Monday nights, Cate spends her weekends having sex with lots of different people. To her, they're both hobbies. It's just that one is considered more 'taboo'.
"It's like, people play sport and twice a week they might go to training. Well, that's what swinging is. It's like a sport, where you just go and do whatever you're doing, and then you leave it and you come home and life continues," she told Mamamia's daily news podcast The Quicky.
LISTEN: To Cate on The Quicky. Post continues after podcast.
The first time she tried it was after her 40th birthday.
Cate wasn't interested in getting into a relationship, but she was sick of just having friends with benefits – she wanted to have deeper sexual experiences.
"I wanted to have sex without commitment... without bringing guys over [to my house] anymore," she explained.
Her first dip into the lifestyle was at a swinger's club in Sydney. She walked in and thought to herself: "This is my calling. This is what I am looking for."
"I can go to a club, have sex with someone, and then walk away and leave it there, and then come home and do my motherly duties or whatever," she said.
As Cate explained, you never forget your first time.
For her, it was a couple at that swinger's club who changed the sex game for her, forever.
"They really looked after me the whole night. They didn't pressure me, and it was just whatever I wanted to do," she said. "After that Friday night, I started to go back on a regular basis."
Cate says swinging is often misconstrued.