This is a hidden quest that you can access while you are on main quest no. 0013: Beats to Die For. What you need to do to start this Lover’s Quarrel side quest is to meet the condition of going in one of the sparkling doors during the dungeon crawl. Actually this is not so hidden for everyone to miss compared to Lifestyles of the Rich and Famous 2 but you can still play the game even without dealing with this side quest hence there are still players of Deadman’s Cross missed it.
Below you can select on job no. 2001: Lover’s Quarrel to start the mission.
This job is requested by Jay which you need to go to the Last Drop and see what job the man from Courtney Street has for you with follow up quest to capture 2 Deadman free climbers in Gould Square.
Upon confirming, “Your wife sounds liek a hell of a woman, through. I’d say the climb is the least of your worries.”