Wicked author Gregory Maguire confirms lesbian subtext between Glinda and Elphaba was always intentional while he was developing their relationship. The Wicked movie adaptation’s positive reviews have often highlighted the closeness in the relationship between Glinda (Ariana Grande-Butera) and Elphaba (Cynthia Erivo), especially as their friendship starts to dwindle throughout the story. However, there have been interpretations of the pair having an LGBTQ+ relationship, with both Grande-Butera and Erivo supporting the possibility of looking at their connection through a romantic lens. However, nothing had ever been confirmed about just how close the pair truly were.

https://screenrant.com/wicked-book-elphaba-glinda-lesbian-subtext-gregory-maquire-confirm/