This isn’t just any old love song! 90 Day Fiancé stars Jon and Rachel Walters have one of the sweetest love stories out of the entire TLC franchise — and they documented every major milestone in their marriage so far on Season 1 of 90 Day Fiancé: Before the 90 Days. Fans watched as Jon, 34, and Rachel, 33, met in person for the first time, shared their first kiss, got engaged and got married on the show. Recently, the couple took to Instagram to reveal a little-known fact about their favorite duet to sing together on the Smule app and Rachel exclusively revealed to In Touch why the song has such a special meaning for them. Watch the video above to find out the story behind Jon and Rachel’s love song and don’t forget to subscribe to our YouTube Channel.