Spencer Pratt shares the secret to his successful marriage with Heidi Montag after 17 years

There’s nothing superficial about this relationship.After meeting on “The Hills” as 22-year-olds living out their dreams in Los Angeles, Spencer Pratt and Heidi Montag knew they had found the one.They have been married for 17 years and share sons Gunner, 7, and Ryker, 2, and are rebuilding their lives after losing their house in the Pacific Palisades fires.Through it all, they have each other — something that has never wavered since the early aughts.And there’s a key reason behind their successful union.“I always go back to comedy.

Heidi’s so funny.I have a lot of dark humor,” the Pratt Daddy Crystals founder, 41, exclusively told The Post at Hulu’s Get Real event.

“And my mom always calls her like all Pollyanna or Mary Poppins because pre our house burning down, we had a lot of like first world problems, real-life problems, and she always just stayed so positive.”Taking a moment to gush over his other half, Pratt added, “It’s just more Heidi being an angel that makes it a lot easier.I always say like, ‘I don’t know if marriage would work out if I wasn’t married to you.'”Along with being a wife and mother, Montag, 38, is fresh off her Coachella debut after the pop star’s music career exploded in January.

Montag’s 2010 debut album “Superficial” went No.1 on the iTunes chart 15 years later, and she hasn’t stopped since.“Shout out, Kourtney Kardashian and Poosh,” Pratt exclaimed.

“Even though I’m a Swiftie, I ride for Kourtney Kardashian.She never said anything about Taylor, so neutral grounds, so I’m safe here.

But yeah, it was incredible.The event was unbelievable.” The father-of-two noted there were some technical difficulties, but “Heidi powered through it.”“Once your house burns down and your whole town, you start really believing anything’s possible,” reiterated Pratt.

“I was always like, ‘Crystals.Manifesting. Put positive energy [out there].’ And then your whole life, starting f...