Two cousins have been sentenced in the killing of a young man and woman who were found shot in a parked car on the Jersey Shore during the winter of 2022, the Monmouth County Prosecutor’s Office said Monday. Gabriel J. Braithwaite, 21, of Keansburg, who pleaded guilty to first-degree murder and weapons charges in the double homicide, was sentenced to 40 years on Friday. His cousin, Jeron D. Dearin, 24, of the Cliffwood section of Aberdeen, was sentenced to five years on a guilty plea of conspiracy to commit aggravated assault. The pair was arrested following an investigation into the fatal sho…