FDNY firefighter arrested for posting explicit video of ex online

An off-duty FDNY firefighter has been arrested for posting a sexually explicit video of his ex-girlfriend online, police said Thursday.

Firefighter Derelle Guy, 34, was driving on the Belt Parkway in Brooklyn when his car broke down near the Verrazano-Narrows Bridge about 9:55 p.m. Wednesday.

Police arrested him because his license was suspended and he had no insurance — then learned he had been named in a complaint filed by his 32-year-old ex-girlfriend, police said.

The ex-girlfriend alleged he had posted an explicit video of her online without her permission. Guy was then charged with unlawful dissemination of an intimate image.