Carrie and a guy (Curt) from her office get along well and when Doug finds out people at Carrie's office call Curt Carrie's 'work husband' he feels threatened. Even though he knows Curt is gay.
Doug Heffernan goes to Carrie's office and meets her "work husband". He then gets jealous of how close the two of them are, even though Curt is gay. Carrie says Curt is just like what Deacon is to Doug and then Doug and Carrie compete to see who can spend more time with their "work spouse".