Metro

Fired cop claims jealous ex had him booted from NYPD

The jealous ex-girlfriend of a rookie cop enlisted her retired NYPD-officer dad to have her boyfriend booted from the force after he got her pregnant, the axed cop claims in a $14 million lawsuit.

Kevin McMahon, 26, who graduated at the top of his academy class in 2012, says in the suit that his ex, Crystal Troy, hacked into his Instagram account and found a photo of him tagged by a female colleague with the caption “NYPDs Ken Doll.”

She flew into a jealous rage and they broke up last February, according to his Manhattan Supreme Court suit.

Crystal, 24, and her dad, former cop Richard Troy, 50, who runs a private investigative firm in Farmingdale, Long Island, confronted McMahon and his mother and demanded that the rookie file a complaint against the female colleague.

McMahon refused because “no inappropriate action had taken place,” he says in court papers.

The couple, who had been dating for a year, reconciled Memorial Day weekend.

“After a conversation about the possibility of getting together again if she agreed to be less possessive, the couple had sexual relations,” the suit says.

“Afterwards, she surprised him by saying that she was no longer taking birth control pills and that she needed to take a morning after pill.”

But then Crystal, who lives with her father in Huntington Station, allegedly texted McMahon that she never took the pill and had missed her period.

McMahon responded — in what he claims was a melodramatic threat — by texting to Crystal, “If you have this child I’m going to kill myself.”

McMahon, who also lives with his parents in Seaford, swears in court papers that he had no intention of hurting himself and “made this comment in a moment of frustration and annoyance at being lied to and manipulated.”

Later that month the couple’s parents traded jabs in separate phone calls, with Robert Troy allegedly telling McMahon’s dad “we can get him fired” and Crystal’s mother scolding McMahon’s mom for having a son who was “avoiding his responsibilities” the suit says.

When McMahon’s mom demanded a paternity test, Crystal’s mother allegedly shot back, “How about I take your son’s job!”

Later that evening McMahon was stripped of his gun and placed on modified duty because Crystal had reported his suicide threat to Internal Affairs.

He was then grilled about his drinking habits by a department psychologist, who asked him about incidents where he got drunk, smashed his cell phone and punched holes in his parents’ house.

McMahon assumed the “false” information came from his ex, he says in court papers.

He was then tossed from his “dream job” in November, after being told that he was “at high risk for alcohol abuse,” his suit says.

McMahon “ended the relationship and this young woman and her parents retaliated by literally calling internal affairs – which has ruined his career,” his attorney, Rae Downes Koshetz told The Post.

“It was an extremely vicious thing to do,” Koshetz said.

McMahon wants $10 million in punitive damages from Crystal and her parents, plus the $4 million he says he would have made in salary, benefits and pension if he’d worked a 22-year career.

The Troys did not immediately return messages for comment.

An NYPD rep confirmed McMahon’s short stint on the force, but would not discuss his ouster. The rep also confirmed that Robert Troy worked for the NYPD from 1992 through 2005 and left on good terms.

Additional reporting by Kirstan Conley