Romantic rival shot dead outside Manhattan apartment complex

A box of diapers and a package of paper towels lay on the sidewalk as police investigate a shooting on East 101st Street and First Ave. on Friday night.

A man was was shot dead after running into his girlfriend’s baby daddy in the courtyard of a Manhattan housing complex Friday night, cops said.

The unidentified 23-year-old man was hit once in the lower back outside 1966 First Ave. in East Harlem just before 8 p.m.

"It appears to be a love triangle,” said a police source. “The victim’s girlfriend has a child in common with the shooter.”

“There was a dispute and he shot him once in the back”

The unidentified 23-year-old man was hit once in the lower back outside 1966 First Ave. in East Harlem just before 8 p.m.

Cops busted a 30 year-old man a block north at E. 102 St. Police recovered a gun at the scene, cops said.

A roll of paper towels and a package of baby diapers lay where the fatally wounded man fell.

Medics rushed the victim to Metropolitan Hospital, but he could not be saved, police said.