If, Lil said it was a plot device and there was no forethought given it seems like a very dangerous way to write because eventually you'll back yourself into a corner.
Yeah, but AWZ's writers are far too fond of the magic handwave that will wipe all memory of relationships, friendship or romantic, from our minds. Which... frankly, is what soap writers are supposed to do. We appreciate the show because of the actors who retain that knowledge and insert it into their interactions -- I think most of the continuity comes from them, and the directors who allow them that leeway.