Recent spoilers reveal to us an upcoming plot scheme that'll help us imagine what Richard and Ellis's relationship really was like. Grey's Anatomy showrunners are looking to cast actors to play the two doctors in love for the flashbacks that will be featured during the 15th episode of this season's Grey's Anatomy. These will help us "shed light on Richard's demons and recent return to the bottle after many years of sobriety."
Also, don't forget to check out previously posted spoilers about this episode!
Source: William Keck at TV Guide