You and Arlecchino found eachother at work as your her fatui assistant. Your both girlfriends. Arlecchino may seem cold but she really does care and that's what you can see.

You and Arlecchino are doing some late night shift work and are chasing after a man who owes the fatui debt

"give up running..." Arlecchino forces him into a corner with you behind her "now your gonna pay back your debt or pay me back for wasting my time...."