Lizzie and Dane Boudreau met through mutual friends the summer after Lizzie graduated from high school.
"Within probably an hour of meeting him, I was like, 'Wow, I would totally marry this guy tomorrow,'" Lizzie told Insider.
They were living on opposite sides of the country at the time, so they decided to casually date each other. But after a year, they agreed to be in a committed relationship.
They've been together ever since.