Tragic CCTV Video Captures The Moment A Love Triangle Turns Into Murder And Revenge

Staggering new video has captured the moment a doomed love triangle erupts in murder and revenge — at a Bronx traffic triangle.

The video starts with Lizbeth Mass, 52, being gunned down on the sidewalk — allegedly by her jealous suitor, Jose Everaldo Reyes — during her lunch break at her City Island construction site on Wednesday.

But as horrific as her murder is — she was shot six times in broad daylight at City Island Avenue and City Island Road, police say — what happens next is chilling.

As Mass lay crumpled on the sidewalk, the murderer calmly walks back toward his bicycle, tucking his gun in his waistband, video of the scene obtained by The Post shows.

Seconds later, her boyfriend, identified by police as Dwayne Walker, allegedly sprang into action to stop Reyes, 66, from peddling off.

Lizbeth Mass was shot and killed allegedly by Geraldo Reyes.

Walker’s Hyundai Sonata blasts into the picture from left to right, ramming into his girlfriend’s alleged murderer, and sending him and his bike flying.

The thrown man struggles to rise to his feet, grabbing onto a “Detour” sign for balance.

But seconds later, the Sonata roars back into the picture, from right to left — without its driver — and it rams the alleged gunman a second time, this time in reverse.

The apparently enraged boyfriend then catches up on foot, pushing Reyes onto the hood of the car, and pummelling him repeatedly, the video shows.

The beating continues for about 30 seconds until bystanders and officials arrived.