Brandi Glanville has been singing the praises of her seeming BFF all season long on The Real Housewives of Beverly Hills.

But, has Brandi Glanville begun to change her tune?

The RHOBH star was outed on a sneak peek when Kyle Richards, Kim’s sister, discovers that Brandi Glanville has been talking about Kim behind her back.

Uh oh.

In a memorable episode last week, Lisa Rinna felt the wrath of Kim Richards after Rinna expressed concerns for Richard’s sobriety.

Kim Richards swatted down her concerns, saying, “I have been sober for three years, and my friends and family have never seen me like that. You have gone around to everyone and talked … asking where I’ve gone to treatment, if I had a sponsor … you want to bring up my stuff, let’s talk about your home life.”

She then insinuated that Lisa Rinna’s husband, Harry Hamlin, had a secret that he was hiding and threatened to tell on him.

Now, it may be Brandi Glanville‘s turn to feel the hate come down from Kim Richards.

But it may not matter much to Brandi Glanville. She has already expressed a desire to leave the show.

Brandi Glanville said in her blog, “I’m giving serious thought to quitting Real Housewives Of Beverly Hills. It might be time to leave the party. I really have to think about my health – it’s such a mindf**k! At some point, it’s just not fun anymore. I have all the women against me – it’s too much.”

Perhaps this could be the most explosive feud on the show yet, as Brandi Glanville will likely fight back a lot harder than Lisa Rinna did.

Many fans of the show would be happy if Brandi Glanville left, but she said of the show’s future without her, “I’m actually very curious to see what they’ll do if they don’t have me to fight with. I’m wondering who will turn into the person they pick on. Or they’ll just sit around watching Lisa getting a puppy and Kyle go on vacation. That won’t be fun.”

Brandi Glanville’s got a point! What do you think about the possibly explosive revelation that Brandi Glanville has been talking behind Kim Richards’ back?