Young dad-to-be killed by aunt’s crazed ex in East Harlem apartment shooting

A 19-year-old dad-to-be was fatally shot by his aunt’s obsessed ex-boyfriend when he got in between a domestic spat in an East Harlem apartment, the devastated woman told the Daily News on Thursday.

Ramon Alvarez was inside his apartment on E. 112th St. near Third Ave. — part of NYCHA’s Jefferson Houses — around 3:30 a.m. Wednesday when his aunt’s ex pushed his way into the home.

“He took out his gun and he shot, pow, pow,” said Melidy Adega, 38. “[Alvarez] was getting up from sleep when he heard the commotion.”

As the man aimlessly fired the gun, Alvarez rushed into the room to see what was going on.

“He shot my nephew first,” said Adega. “He was shooting in the dark.”

The man then turned and pointed the gun at Adega’s face, but the woman grabbed the barrel before he could fire off a shot, she recalled. She was grazed in the shoulder.

When medics arrived at the scene, Alvarez was conscious and talking.

“They were banging on my door telling me someone had been shot,” said neighbor Angel Rivera, 64. “EMTs brought him out on the stretcher.”

He was taken to Harlem Hospital, where he took a turn for the worse and died, police said.

Adega and the gunman had been dating on and off for about four years before she recently ended the “abusive” relationship.

“He’d come over and he started acting violent,” Adega claimed of the shooter. “When he said he was going to kill me, I never took it seriously.”

The gunman sped off on a bicycle, ditching the gun as he made his escape, officials said.

Alvarez’s apartment remained a crime scene Thursday night. Neighbors told The News he lived there with his family.

The young man and his girlfriend were expecting a baby boy next month and planned to celebrate the arrival at a shower scheduled for this weekend.

“She’s devastated,” Adega said of the victim’s girlfriend. “That’s their first child, and he’ll never even see the birth.”

The slain man was working for the city’s Department of Parks & Recreation and working to get his GED, according to the mother-to-be’s brother.

“He was going to be a great dad,” Dorian Lawrence said. “We’re all very hurt.

“I’m at a loss for words.”

On Thursday, police arrested the 53-year-old gunman in the Bronx. Charges against him were pending as of the evening.

He has 27 prior arrests, 17 of which are felonies, according to police sources.