Caleb kept it traditional by asking her Maddie's father, Kody, for approval, according to People. He then took his fiancée-to-be to a look-out point, where he surprised her with a blue diamond ring.
"It was cold and we were huddled in jackets and I thought he was crazy to stop," Maddie told the magazine. "He said to come look over here. So I walked with him to the edge. He told me he could never express how much he loved me, but he wanted to spend his life trying, and went down in one knee and pulled out a box. I started kissing him and saying, 'Yes, yes!'"
After the announcement, Maddie's family and friends shared an outpour of congratulations on Twitter.
"My best friend is engaged!!!!" wrote Dezi Mascarenas. "Congratulations @MaddieR_Brown and Caleb!! I'm so happy for the two of you!!!"
"We are not living a plural marriage," Caleb tells People. "We support Maddie's family with their choice of living plural marriage, and they support us with our choice in just marrying each other."
The Brown family just keeps on growing! Watch the video below of Kody and his fourth wife, Robyn, announcing that she’s pregnant with their second child, which will make it the 18th kid for the entire Brown family.