Other stars also cheered on Johnny for finally popping the question, former Bachelor Matty J commenting "How bloody good - huge congrats guys".
Though Kerry is yet to share a close up of her glittering ring, it's easy to see how stunning it is even from a distance.
Featuring what looks like an oval cut stone in a gold band, the piece was created by Nicholas Haywood Jewellery.
It was love at first sight for the reality TV contestants, with Kerry and Johnny clearly smitten upon meeting on their wedding day on Married At First Sight.
WATCH: MAFS' Kerry surprises Johnny in their new home
"As soon as I saw her bright smile… the breath just came out of me. She’s stunning, she’s incredible. I seriously can not wipe this smile off my face," Johnny told the cameras after meeting his bride.
"He put me at ease as soon as I saw him," Kerry said. "He looks really kind. I’m stoked."
With their clear chemistry - and bonding over the fact they'd both been married before - the duo seemingly breezed through the experiment (unlike most of the other couples on their season) and stayed together after final vows.
Just two months after the series ended in April, they took the plunge and moved in together, following up with a new family member one month later - a puppy.
Now, just over a year after moving in together they're engaged, so are babies next on the list?
Kerry told WHO last year that they were definitely in the plans, but teased: "My mum always told me ‘if you want to make God laugh talk about your plans out loud’.
"There’s no concrete timeline but one of the things we’ve really bonded over is, we both want to grab all the opportunities that come our way, we’re both really spontaneous so we both love to say yes to things."
We'll just have to wait and see!
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