The star's friends, family, and fans swamped his Instagram with congratulatory messages. There was plenty of love to be shared by his former rugby and reality TV friends, with David Pocock and Jason Fox among his well-wishers.
"Congratulations brother! So happy for both of you and the family," his SAS Australia co-star Sabrina Frederick wrote.
"Amazing news guys! Biggest congrats and sending lots of love," added Lincoln Lewis.
Alexandra, a Sydney socialite, also shared their scenic pregnancy picture on her Instagram with a screenshot of her sonogram.
She wrote a sweet caption celebrating her pregnancy with Nick.
"We decided to create a little hybrid!! Can't wait to share this next chapter with the love of my life welcoming our little badger cub into this world shortly," she gushed.
The couple hasn't revealed their baby's due date or gender, but their little one is expected to arrive in 2022.
Nick and his girlfriend have been dating since at least June 2020, and according to The Daily Telegraph, they spent lockdown together in Seal Rocks, situated on the mid-north coast of New South Wales.
They made their relationship public in January 2021 when Nick shared a photo of himself cosying up to Alexandra on a boat with wide smiles plastered on their faces.
They have since posted pictures of each other sparingly, but fans can tell they're very loved up when they do!
Nick is infamous for becoming The Bachelor's most controversial leading man, when he failed to choose between Brittany Hockley and Sophie Tieman during the season final back in 2018.
But now it seems he's found his life partner.
This article originally appeared on our sister site, Now To Love.
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