A California photographer took a picture of a beautiful rainbow at sunset and inadvertently captured something even more magical: the exact moment a couple got engaged.

Dan McGeorge appeared on "Fox and Friends Weekend" this morning to discuss his online campaign to find the mystery couple whose engagement he captured at the historic Hotel Del Coronado near San Diego on Jan. 31.

"When I was working on the photo and I zoomed in to take a close look, I saw them. And what a magical moment," McGeorge said. "This is something that I think someone would treasure ... I wanted to get a hold of them and give them a print as a gift, because it's something really special."

McGeorge took to his Facebook page to seek help finding the couple. A nationwide search ensued, with hundreds of strangers helping in the pursuit.

This morning, the "Fox and Friends Weekend" hosts had a Valentine's Day surprise for McGeorge: the mystery couple in the photo, Robert Treml and Meghan Peart, called into the show.

Treml explained that his brother called him the night before and informed him of McGeorge's quest to find them.

"He said, 'We just saw a link and there's a photographer who captured the exact moment of your proposal and your engagement in San Diego. And he's looking for you guys.' At first, I didn't know what to think," Treml said.

"We were just so excited that Dan was able to capture that beautiful moment," Peart said. "We're definitely going to find a good spot for it in our new home."

Watch the feel-good clip above.

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