In May, ET caught up with the almost-Bachelorette, where she gushed about her then-fiancé.
Nilsson told ET that it might sound "crazy," but she actually knew Byrne was "the one" before they locked eyes for the first time.
"I prayed about it and I just knew, before we even met face to face!" she exclaimed. "I've told all my girlfriends all this time but not him until now -- to keep the pressure off! -- but, whoo!"
See more in the video below.