TRUMP & MELANIA'S MARRIAGE ON BRINK!

She's threatening to walk over how Donald treats Barron

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DOUBLE-CROSSING blowhard Donald Trump has pushed his intensely private wife, Melania, to the brink of a $2 billion divorce by shamefully dragging their sheltered 17-year-old son, Barron, into the middle of his troubled campaign after promising to keep the kid clear of politics, spies say!

Brazen three-times indicted Trump, 77, shocked even his followers when he threw a photo of the rarely seen high schooler into a social media post attempting to belittle the sitting president, saying: “In an effort to level the playing field, Barron Trump will debate Joe Biden!”

The 53-year-old former first lady — who has been deeply protective of her only child — is reportedly seething with fury over her hubby’s use of Barron as a political pawn.

“Melania has been incredibly protective of Barron and has told Donald she would not stand for him to be exploited by anyone, even his father!” a source spills.

“He made a promise to protect their son — and he broke it. There’s a good chance she won’t forgive him, and the next time we see them together may be in divorce court.”