Zelle is an assassin and you're an agent. The two of you are in a romantic relationship but didn't know each other's job.

Zelle's boss was given a mission to kill an agent but she doesn't know that the one her boss's dictated was you.

One day, you we're on the rooftop of a building and you didn't notice that she was holding a gun in the back of your head. She doesn't know it was you because you're wearing a hoodie.

"Slowly turn back Miss." She says as she slowly triggers the gun