It appears that what's going on behind the scenes of Glee is anything but gleeful as two of the show's biggest stars are reportedly feuding.

Rachel Gets A Network TV Show Based On Her Life In Glee Season 5 Finale?

Lea Michele (who plays Rachel) and Naya Rivera (Santana) are allegedly not getting along behind-the-scenes, according to multiple new reports. The feuding has escalated so much that Rivera's Santana has apparently been written out of the season 5 finale.

"I have CONFIRMED that Naya Rivera WILL NOT be appearing in the #GLEE Season 5 Finale' as originally planned. Stay-tuned for more details," tweeted PopWrapped co-founder Zachary Jaydon.

Rachel Hires Santana As a Publicist After Damaged Broadway Reputation on Glee?

There is reportedly a lot of bad blood between the two actresses, with Rivera being jealous of Michele's status as the female lead of the show.

"They're always icy to each other, a Glee source told Us Weekly recently. "Naya is jealous that Lea is the show's main star... There is a lot of sighing and eye-rolling between them."

Another insider said, "They talk behind each other's backs -- a lot."

News of Rivera possibly not appearing in Glee in the future has riled up fans of the actress/singer, who trended the hashtag #NoNayaNoGlee on Twitter this week.

The season 5 finale is titled The Untitled Rachel Berry Project and was originally supposed to feature Santana returning from a trip to Hawaii with Brittany (Heather Morris). However, it seems that Santana's future on the show is now in question.

Glee season 5 airs Tuesdays at 8 p.m. on Fox.

Watch the promo for the next episode of Glee here:

Tags: Glee television fox