The former Pennsylvania cop who traded his badge for a spot on "Love Island USA" has a chance to get his job back after being booted from the show ... but it ain't going to be easy. Here's the deal ... Sean Reifel was a police officer in Bethlehem, PA until 'Love Island' came calling. He walked off the force and into the villa ... only to get sent packing rather quickly. Now, Bethlehem Mayor J. William Reynolds tells TMZ ... if Sean wants his old job back, it's not out of the question ... but