Tim Tebow and Demi-Leigh Nel-Peters. (Photo: Getty Images)
"A year ago today, you made me the happiest man... I can't wait to spend the rest of my life with you," he captioned the 4-minute long video.
He also shared the couple's official wedding hashtag #TyingTheTebow.
For the proposal, Tim gathered family from all over the country and South Africa to be part of the special day - all in secret, of course!
Demi-Leigh was told that she would be attending a belated Tebow family Christmas dinner.
In the video, we see Tim taking Demi-Leigh to a special place on his family's farm in Jackson, Florida, with the family listening in on the sweet proposal.
Tim also flew in Demi-Leigh's favourite local musician Matthew Mole to serenade his bride-to-be.
After the former Miss South Africa, says "yes," she is surprised by family and friends from back home.
We also get to listen to parts of the family members' beautiful speeches, as they pay tribute to the couple.
"The most thoughtful thing anyone has ever done for me. Certainly the biggest surprise. I knew it was you since date one," Demi-Leigh wrote on Instagram as she remembered the special day.
"I can't wait to be your wife... soon," she added.