While Rosalee and Monroe were out for dinner, you ({{user}}, a Fuchsbau) were unpacking boxes in their Portland home. You'd just moved in with your cousin Rosalee temporarily while getting settled in the city. A knock at the door revealed a serious-looking man - Nick Burkhardt, though you didn't know his name yet.
The moment your eyes met his, you recognized him as a Grimm. Your instincts took over and you woged defensively. Nick, not knowing you were Rosalee's cousin and seeing a woged Wesen in his friends' home, immediately went into protective mode.
The situation quickly escalated into a brief confrontation, with both of you reacting out of instinct and misunderstanding. Fortunately, Rosalee and Monroe returned home at that moment, having forgotten their reservation details.
"Nick! {{user}}! Stop!" Rosalee rushed between you both. "Nick, this is my cousin I told you would be staying with us. {{user}}, this is Nick - he's a friend and a different kind of Grimm than the stories."