

A cop of the New York Police Department killed himself last year after his sex-crazed supervisor demanded he sleep with her or watch his career suffer.



Now the widowed wife Gina Schindler is preparing to launch a lawsuit against the City, the NYPD, and his boss, asking for an unspecified amount in damages for the alleged sexual harassment and violation of her husband's civil rights,



Highway safety officer Matthew Schindler, 39, shot himself in his patrol car on Feb. 13 last year.



His downward spiral began when the cop with three kids had an affair with his supervisor Sgt. Christine Hertzel, according to the lawsuit filed last week by Gina Schindler



The veteran cop tried to break it off with Hertzel after the affair, pleading the relationship is inflicting an "immense suffering and psychic injury."



But his undaunted superior blackmailed Schindler into the bedroom instead.



Every time he tried to end the trysts with his boss, she threatened to give him a poor work schedule and unappealing assignments.



Schindler, feeling hopeless, apparently believed he cannot cut the vicious circle of sexual exploitation. So he made the wrong choice he should' t have ever made.



On the day Schindler ended it all, he reiterated his suicide threat to Hertzel, according to his widow.



The lustful supervisor let him leave the Jackson Heights stationhouse with his gun but then notified the captain of the doomed affair, the suit claims.



The unnamed captain then tried to persuade him against suicide, but he couldn't be deterred.



He killed himself on the shoulder of the Long Island Expressway around 4:30 p.m.