In the show's fifth season, Torres embarked on a relationship with Arizona Robbins (Capshaw). Fans refer to the relationship between the two by the portmanteau "Calzona" (for Callie + Arizona). Rhimes praised the chemistry between Callie and Arizona in contrast, comparing it to that between the show's primary couple Grey and Derek Shepherd (Patrick Dempsey), and stating: "They have that little thing that makes you want to watch them." In "An Honest Mistake", Torres was initially rejected by Robbins, with Robbins citing Torres' "inexperience" as a factor. Series writer Peter Nowalk offered the insight: