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Back in 1982, John Mellencamp had one of his biggest hits with "Jack and Diane," a heartland love story about a teenage, Tastee Freeze-adjacent romance.

But the singer's own recent relationship with Christie Brinkley, which ended this summer after a year of dating and at least one round of marriage rumors, never looked much like the Americana fantasy he painted in his music. An insider tells Page Six the pair called it quits because their views on politics and social mores differed so much. (Or, as Page Six put, John's "redneck ways" were a turn-off to the longtime Democrat and Hillary Clinton fan.)

While Christie called New York's chichi Hamptons scene home for three decades, John remains happy in southern Indiana.

"If you know John, you know he doesn't do well at social gatherings and at tables filled with nice folks, particularly the Hamptons set," a source tells the Post.

"He shoots straight from the hip. She may have liked that he's a cowboy, but in the end that's what drove her away."

According to the tab, John and Christie saw eye-to-eye on things like gay marriage, which they both support, and war, which they both feel should be only a last resort. Still, lyrics like "People know this world is a wreck/We're sick and tired of being politically correct" in "Peaceful World" or "It sure has changed here/Since I was a kid/It's worse now/Look what progress did," in "The West End" sound more like the kinds of songs a Donald Trump supporter might sing, although John is reportedly not a fan.

While another insider insists "distance was the culprit" in the couple's demise, that source agrees John "doesn't like the Hamptons" because "it's not his scene," which made it hard to keep the romance viable.

Earlier this month, a rep for the couple echoed similar sentiments about distance being a problem, telling Us Weekly that "Both the mileage between their homes and their heavy career demands interfered with their ability to maintain the relationship."

The rep also said the two "vowed to remain friends."

That said, John's so-called "cowboy" nature may have rubbed off on Christie in spite of the split. In July, after she caught a woman urinating on her Hamptons property, she retaliated by turning a garden hose on the perpetrator.

"I know it's Independence Day but that does not mean 'free to pee' in front of my guests and me at my fireworks gathering," the fashion icon later wrote on Instagram after the story of their interaction made headlines.

"Maybe the trespasser should celebrate 'Depends Day' as she apparently thinks she lives in 'The Land of the Pee,' as I was forced to hose down her mess after she urinated in my yard all the while throwing things at me."

She added: "My wish for everyone on this Fourth of July is...May you live in the Land of the Free from belligerent drunken stalkers with weak bladders and foul mouths. (that's not too much to ask right ?) Peace! I'll raise my glass of Bellissima Prosecco to that…"

America the beautiful … Hamptons style.