The couple, who went public with their relationship in July 2022 and moved in together in January, shared a sweet video on Instagram on Sunday evening confirming the exciting news.
“Overjoyed to share our magical secret with you,” they wrote in the caption alongside a baby angel emoji.
In the clip, the pair are shown looking loved up on the beach surrounded by candles, with Jack cradling and kissing Courtney’s baby bump at one point.
Courtney is wearing a flowing white dress adorned with colourful flowers, while Jack wears a white button-up shirt and blue jeans.
The video, which is set to Adele’s 2015 hit Love In The Dark, ends by revealing that Baby Millar will arrive in November 2023.
'Best news ever'
The couple’s followers quickly took to the comments to congratulate them, with Jack’s former MAFS ‘wife’ Domenica Calarco calling it the “best news ever”.
“Congratulations you two beautiful people,” she added.
“UM OMG,” Ella Ding wrote. “This is such beautiful news, congratulations both of you!!!!!”
Fans also sent their well wishes and said they were going to be “the best parents in the world”.
Jack reveals secret about his relationship with Courtney
He shared that they first met at Dom’s Showpo fashion launch in May and immediately hit it off, and had their first date in June last year when Jack went to the Gold Coast for the Logie Awards.
“It was going swimmingly, it was all just very natural,” he detailed. “And then she came down to Sydney after that and we went down to the snow.
“I don't know whether you'd call that snow trip the second date, but she stayed for two weeks and five days in was the first time I told her that I loved her. We were a little bit drunk, we had a few little wines and I was just like, ‘I love this girl’.”
Jack went on to describe Courtney as “the love of my life” and said their relationship is what he is most thankful to MAFS for.
“It's not that the show placed us together, but it definitely gave me the avenue to be in the same circles that I wouldn't have been in,” he remarked. “I happened to stumble across this beautiful girl and met her, so that's definitely something that I'm probably most ecstatic about post-show.”
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