Cathy rarely speaks about her personal life but shared a custom-made art piece that featured herself and Ritchie on Instagram back in August, though Ritchie's face was not made visible.
"It’s a special day today. My boyfriend’s birthday and I don’t share him on insta purely because I like to keep my love life private," she captioned the post.
"People wanna ruin a good thing and I don’t want that for us. Plus he’s a private man and I respect his wishes. But for once, I’ll post of us. I love you so much 💕 hope you had a beautiful day baby x."
In a previous chat with NW back in May, Cathy debuted her new man and confessed they met in early 2019 via a dating app but reconnected a few weeks after she and Josh left MAFS.
"Life has been better than ever. I found an amazing partner. It took an experience like MAFS to make me realise what I want in a partner and what I expect in a relationship," she confessed.
She added that she "hit the jackpot" with Ritchie and that marriage and babies are well and truly on the cards.
"We see a future together and are already thinking about what suburb we would buy or build a house in. And kids will happen. No dates yet, but stand by!"
Meanwhile Cathy's MAFS ex Josh, 29, has moved on too and has found love with 27-year-old nurse, Maddy Butt.
The former reality TV groom went Instagram official with her back in October when he shared a sweet photo of them with their arms around one another, and simply captioning the snap with two heart emojis.
Of course, his MAFS co-stars quickly shared their delight in the comments.
"That’s a bit cute," Luke Eglin penned.
"GlD your happy joshy!" exclaimed Hayley Vernon.
"She looks really nice. Does she have an older sister? ;)," joked season six groom Mike Gunner.