AfterEllen.com explores if there is a need for lesbian subtext in shows such as Rizzoli & Isles and other shows. Naturally Xena was mentioned since you can't talk about subtext without talking about Xena and her relationship with Gabrielle which has sparked thousands of subtext fanfic for over 15 years.
Here's an excerpt from the article:
It's been over a decade since Xena ushered in the golden age of lesbian subtext. For six seasons between 1995 and 2001, the show's writers danced around the issue of the Warrior Princess' relationship with Gabrielle. Perpetual innuendo, running jokes and subtle references to Xena and Gabby's sexuality permeated the plot and dialogue. And though Lucy Lawless is on record as calling the couple "married," the show's creative team never offered up a definitive answer about their relationship.