“Morning Joe” hosts Mika Brzezinski and Joe Scarborough could soon go public as a couple. Page Six has exclusively learned that Brzezinski and her husband of 23 years have quietly divorced.

Popular MSNBC stars Scarborough and Brzezinski are widely rumored to be romantically involved — and there’s plenty of on-air chemistry for all to see. But while Scarborough is also divorced — since 2013 — the TV duo have never confirmed they’re romantically involved.

An NBC insider told us, “Everybody at 30 Rock knows they are a couple . . . They are constantly together, they arrive and leave events together, even on weekends. They are each other’s publicists and finish each other’s sentences. It’s the worst-kept secret in TV.”

Brzezinski, 49, and her ex-husband, WABC Eyewitness News investigative reporter James Hoffer, who married in 1993, have undergone an under-the-radar divorce, which was recently settled, we’re told. They have two teenage daughters.

Scarborough, 53, divorced Susan Waren, a former aide to former Florida Gov. Jeb Bush, in 2013 after a 12-year marriage. The former couple, who have two children together, separated the previous year.

An MSNBC spokesperson confirmed to Page Six, “Mika’s divorce was finalized in the past year. She’s really grateful that it was done amicably and in private. This has, of course, been a painful time for her family. So right now she is focused on her two teenage daughters, and on continuing to heal.”

The spokesperson declined to comment on the status of her relationship with Scarborough.

A friend of the “Knowing Your Value” author said: “Mika has always been very open — in her books and elsewhere — about her failures and disappointments in life, her struggles with eating disorders, her career, the ups and downs of parenting.”

The friend added, “I’m sure down the road she’ll want to share more about this experience, but right now she thinks it’s best for her family to have some privacy.”