I always assumed the next President would not be sleeping in the same bed with the President’s spouse. But this is not exactly what I had in mind.

Future First Lady Melania Trump and son Barron will not be moving to the White House after Donald Trump’s inauguration in January, The Post has learned.

The president-elect’s 46-year-old wife and their 10-year-old son are staying put at the family’s glitzy Trump Tower penthouse so that Barron can continue attending his Upper West Side private school, sources told The Post.

“Melania is extremely close to Barron, and they have become closer during the campaign,” said a source close to Trump’s transition team. “The campaign has been difficult for Barron, and she is really hoping to keep disruption to a minimum.”

Another source said Melania Trump will travel to the White House as needed, but that her primary focus is on Barron.

First, the always-important caveat: anonymous “sources” could be wrong.

If they’re right, then I’m not sure what to make of this — but it’s pretty odd to imagine a President living in the White House while his wife and son live in New York City.

I’m not going to offer any criticism of this. I tend to think people’s family lives are their own business — even if it’s the President of the United States. I assume Melania is doing what she thinks is best for her son.

But I’ll admit to being surprised. The story does say the situation could change at the end of the school year, but it might not.

It also means that the disruption to residents and tourists in the area of Trump Tower will continue for the foreseeable future.

“That building is going to become the White House of New York,” said Jim Reese, a former Delta Force commander and president of TigerSwan, a global security company based in North Carolina.

“The Secret Service is going to have to keep that whole area cordoned off so that some wacko can’t get close and detonate a car bomb.”

Strict security measures around Trump Tower will remain in place, with two of the five lanes on Fifth Avenue between West 56th and 57th streets closed because of barriers, said officials at a joint NYPD, Secret Service and City Hall news conference Friday.

Following the presidential election, the area around Trump Tower has turned into a traffic nightmare, with West 56th Street closed to traffic between Fifth and Madison avenues, and shoppers having to go through a security cordon and subject to bag checks.

Well, there you have it.

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