It’s a total eclipse of the heart — at a fraction of your average wedding cost.

Forever’s gonna start on Monday afternoon for Samantha Adams, 28, and her fiance Cameron Kuhn, 27, two high school sweethearts from Kansas City, Missouri who are paying a frugal $2,500 to say “I do” in St. Joseph when the first solar eclipse to cross the US in nearly 40 years enters its totality.

“Space has just always been intriguing and intimidating in all the best ways — it’s humbling,” Adams tells Moneyish of her astronomy obsession.

Moments before the moon blocks the sun directly overhead at approximately 1:07 p.m., the galactic duo will exchange vows with Adams reciting a quote from the late American astronomer Carl Sagan. They’ll become husband and wife as guests watch the stunning spectacle clad in safe solar shades.

“We’ll all go out and wait and put on our glasses and look at the moon getting closer and closer to totality and once it hits will just take in that moment,” says Adams.

The couple will tie the knot at the Castle Bridge Event Center St. Joseph, Missouri, a rustic indoor wooden barn-like space with an outdoor pavilion overlooking a vast greenery and lake where a packaged weekend wedding typically costs $3,000. But since Adams is tying the knot on a Monday, she’s getting it for $500 bucks cheaper. Other costs for food and her wedding dress bring the total up to around $3,850. That’s $22,870 less than the average wedding, which costs Americans an estimated $26,720, according to Costofwedding.com.

Adams, a production artist who has loved astronomy since she was a kid and had to do a project on Jupiter in the third grade, met her fiance Kuhn, an accountant, in high school. The duo went to college together at the University of Central Missouri and bonded over “Walking Dead” comics and the space combat video game Halo in their dorms. At nights, they’d star gaze.

Kuhn popped the question one evening last September at Destin Beach in Florida during the sunset.

“I had no idea he was planning it,” Adams gushes. “I said, ‘if we get married next year, we can do it on the solar eclipse? And he was on board.”

So she sent out space-themed wedding invites with pictures of an eclipse that looks like a dimond ring, and save the dates that doubled as a diagram of the sun, moon and earth aligning.

Adams plans to say “I do,” in a $700 white floral lace wedding dress adorned with starry like sequins. Her shoes are galactic heels — with a design of the actual galaxy — she got for $30 off Poshmark, an app that sells second hand clothing and shoes. Once the party starts she’ll kick off her heels and change into a $20 pair of galaxy Vans for cosmic comfort.

Adams didn’t have to spend on decor, since the event space provides lighting and fixtures but she did create her on DIY origami stars for the tables, and glitter globes that look like stars for center pieces.

The out-of-this-world wedding reception will feature Kansas City barbecue and a chocolate and red velvet cake with a fitting topper that reads “to the moon and back.” Cupcakes for guests are made to look like the galaxy and milky way.

Cost of a solar eclipse wedding for Kansas City bride:

$700 wedding dress
$30 galaxy shoes
$20 galaxy Vans sneakers
$400 Kansas City Barbecue catering
$200 wedding cake
$2,500 event space

Total: $3,850