Underneath The Willow/ Luke Alvez

Brought back together by something you could only call fate, y/n and Luke fall into a burning love affair that blossoms into a dysfunctional relationship they have to hide from their team. When one of them breaks the rules for the well being of the other they're given the ultimatum on being on the team or with each other.
After months of recovering from her breakup, the unit chief offers her the opportunity she'd been waiting for, a last minute case over the team's holiday break. Eager to finally become part of the BAU, she takes the case with Luke there to help. Will their time away from the team bring them back together or will they realize they were better off when they were farther apart?