"I am unbelievably excited, and it feels good to finally have my family that I have always wanted," the bride-to-be tells MTV News exclusively, while also sharing a snapshot of her stunning ring.
The future Mrs. DeBoer also took to Instagram to share her life-changing news following the proposal.
"He's stuck now!" Chelsea playfully added, while flashing her sparkler.
And speaking of the big question, how did Cole ask for Chelsea's hand in marriage? In unique -- and truly romantic -- fashion.
"Cole brought me to a personal spot in the woods where he had photos lining the tree," Chelsea reveals. "The pictures hanging were of him and I and the three of us as a family."
Fittingly, Chelsea's little girl Aubree was a part of the milestone occasion -- and was thrilled for the two.
"Cole asked Aubree if it was okay if he married her mommy. She immediately said yes, was extremely excited, and gave him a big hug," Chelsea adds.
The couple -- who documented their relationship during the recent season of the long-running MTV series -- met at a gas station and began dating last August. Now, looking back on their chance encounter, Chelsea always knew he was "the one."
"The first time I ever saw Cole, before we even talked, I went home and told my friend Chelsey, 'I just saw the guy I am going to marry,'" the esthetician says. Appropriately, Chelsea's aforementioned longtime pal helped Cole pick out the diamond seen above.
And now these two lovebirds have even more celebrations on the horizon. While Chelsea and Cole are relishing this romantic time, they already have an idea of how they would like to say "I do."
"Cole and I really like fall, so sometime around then," Chelsea adds. "The ceremony will be small and intimate with our close family and friends."
Be sure to wish your hearty congrats to the future husband and wife in the comments -- and for a touching throwback, watch a scene from the finale episode featuring Cole moving in with Chelsea and Aubree below: