Meredith Baxter and Patty Duke will join the cast of Glee as a longtime lesbian couple.

According to E! News, the women will first appear on the show's season finale and are expected to return as recurring characters next season.

In the episode, Blaine Anderson (played by Darren Criss) meets Duke's character, a saleswoman, while purchasing a wedding ring for Kurt Anderson (Chris Colfer).

β€œShe speaks to Blaine and his love for Kurt, and then she and her longtime girlfriend (Baxter) offer to be their mentors – a couple who can tell them about what it used to be like for LGBT people, and how great it is for this new generation,” E! News reported.

The storyline was inspired by a current Supreme Court case related to gay marriage.

Baxter came out gay in 2009.