Bill De Blasio’s other other woman is … also a mayor.

The former hizzoner of New York City has shacked up with herroner of South Tucson, Mayor Roxanna Valenzuela.

They’ve been seeing each other for some weeks, and the fling allegedly overlapped with De Blasio’s relationship with progressive activist Nomiki Konst.

Roxanna Valenzuela and former NYC Mayor Bill de Blasio.Roxanna Valenzuela mayor of South Tucson, Arizona (left) has been revealed as former NYC Mayor Bill de Blasio’s girlfriend. Roxanna Valenzuela/Instagram

Roxanna Valenzuela, mayor of South Tucson, AZ, in a yellow crocheted outfit, holding a drink, on a boat.de Blasio’s affair with Valenzuela (pictured) allegedly overlapped with his 10-month relationship with Nomiki Konst, 41. Roxanna Valenzuela/Instagram

De Blasio, 64, had been dating 41-year-old Konst for 10 months when she was reportedly blindsided by his alleged affair and dumped.

And the new power couple appears to have a thing for homewrecking — as Valenzuela is a married mother.

De Blasio, meanwhile, is still married to former Big Apple first lady, Chirlane McCray.

It remains unclear when or how De Blasio and Valenzuela met, but the pair were spotted together as far back as June, when she posted a photo of them posing with their arms around each other at an Arizona fundraising dinner.

De Blasio’s ex and his new beau are both from South Tucson, and sources told The Post he and Valenzuela first got together in Gotham.

Valenzuela is reportedly pretty chuffed about bagging De Blasio — and happy to brag now that the jig is up.

“She’s telling everyone in Tucson, so that’s how the story got out,” a source close to her family confided to the Daily Mail — but said Valenzuela seemed ill-prepared for the amount of attention that was about to be heaped on her and her family.

“I don’t think she gets the level of what she’s doing is going to ruin people’s lives,” the source said.

Dating De Blasio has never been a low-profile affair.

Since he and McCray came out with their separation in a granular New York Times profile, De Blasio has hopped from lady to lady across the country.

He was seen engaging in a heavy make-out session with a mystery woman at a Big Apple rooftop bar in 2023, and then taking another married woman on a romantic stroll in Manhattan just weeks later.

“I don’t know anything about my wife holding hands with Bill de Blasio,” that married woman’s husband told The Post at the time.