In honor of the milestone occasion (definitive dates for the big day have not been revealed), we're taking a fond look back at the expectant couple's early days. Going back to August 2014, Aubree's mama fueled speculation that she had a special someone in her life when she shared the inaugural image with a handsome mystery man (no tags!). Presenting the adorable proof of a possible prince charming:
Shortly after that initial upload, Chelsea's guy was getting a kiss on the cheek. We smelled a romance!
While Cole was unknown at this point -- the long-running series had not yet featured Chelsea's beau -- he made it Insta official with his "babe" a few weeks later.
The photos kept a comin' with more lovey-dovey captions, and soon enough, Cole made his MTV debut after several months of dating. The sweet scene (seen below) was featured during the first episode of Season 5: A frozen yogurt date with his ladylove and her little gal, during which he declared he had "two girlfriends" (awww).
And the rest, shall we say, is history. An engagement, a baby on the way and a fast-approaching wedding! Say cheers to the future DeBoers -- and offer your well wishes for the imminent bride and groom in the comments.