The name for members of the New Girl (tv show) fandom.
The term "roomfriend" is first used by the character
Nick Miller in the episode "Quick Hardening Caulk" when asked by his boss/
sexual partner "Who's this?" in relation to Jess. Since Nick and Jess'
relationship is ill-defined, he calls her his "roomfriend." (Since they are roomates and friends but possibly more.)
The fans of New Girl have since started to call each other "roomfriends."