A New Jersey man who helped his roommate toss his one-time junior prom date’s body off a bridge was sentenced to 18 years behind bars Friday.

Preston Taylor, 22, had pleaded guilty to his role in a deadly scheme to rob 19-year-old Sarah Stern, who disappeared in 2016 from her Neptune City home, Asbury Park Press reported.

Monmouth County prosecutors said Taylor was enlisted to help his roommate, Liam McAtasney, discard of their childhood pal’s body at Route 25 bridge in Belmar.

McAtasney, who was sentenced to life in prison for the murder, strangled Stern to death at her home and stole her $10,000 savings from a shoebox.

He promised Taylor that he could have a cut of the stolen cash to help throw her body off the bridge, prosecutors said. They then abandoned her vehicle nearby to stage her death as a suicide.

Before he was sentenced, Taylor made a plea for forgiveness, but Stern’s father didn’t want to hear the apology and left the room, according to the news outlet.

“There’s so many things about this scenario I wish I could take back and make right,” Taylor said. “I should have known better and done something to stop this and I wish more than anything I had. I’m sorry.”

He apologized to Stern saying that she was “a very beautiful young woman who didn’t in any way deserve the end you met.”

Superior Court Judge Richard W. English addressed Taylor, saying that plotting to rob a friend who he took to the school dance “doesn’t even make sense to me.”

“Mr. Taylor, it’s clear, did not commit the murder here. He did everything but put his hands around her neck,” English said, according to Asbury Park Press.

With Post Wires