"The American Roommate Experiment" by Elena Armas is a romance novel that follows Rosie, a romance writer struggling with writer's block, and Lucas, her best friend's cousin, who she has been following online. Rosie finds herself unexpectedly living with Lucas while she recovers from a ceiling collapse in her apartment and faces a looming deadline for her next book. Lucas proposes a "roommate experiment" of experimental dates to help Rosie spark her romantic inspiration.