On Sunday, Jon confirmed the news.
“I just love how happy she looks. Oh, and we got engaged at the Grand Canyon yesterday! And now @dr.jessicagriffin is mine forever,” the season 6 castmate wrote along with the hashtags, #shesmine and #nervouswreck.
Along with the announcement, the groom-to-be shared a photo of the couple from the Grand Canyon with Griffin showing off her new diamond engagement ring.
“They are both beyond thrilled,” a rep for the couple shared. “They knew this would be the end result all along.”
Jon, a financial associate, was paired with commercial insurance adjuster Molly Duff (pictured above), but the exes called it quits on decision day.
In America, the couple legally get married on the show.
They finalised their divorce after filming for the show wrapped.
Jon has defended his relationship with the TV expert.
On Twitter, he mused: “The funny part is that every time we tell someone the actual timeline in person, ‘scandalous’ is never the word they use. Too bad we aren’t allowed to tell the truth on social media.”