The Real Reason Brandi Glanville Turned On Lisa Vanderpump! So what made the deep friendship between Brandi and Lisa crumble so quikly? Why had Brandi turned on Lisa so unexpectedly? Well, Brandi was angry that Lisa is still friends with Sheana Marie, the star of Lisa's sister show, Vanderpump Rules. Sheana had once an affair with Brandi's then husband but remained friends and coworkers with Lisa. But now Brandi believes that Lisa knew more about the affair then she lead on. "Brandi became convinced Lisa had lied to her and had known about the affair when it happened," an insider told Life&Style. Wow! That that low be very low of Lisa if she actually knew the affair was going on!

Brandi Glanville even turned on Lisa's hubby Ken, whom Glanville has seen as a father-figure for years. Lisa Vanderpump and Brandi Glanville used to be the closest of friends speaking on the phone every morning and turning to each other for compassion and humor. But now the Beverly Hills Housewives are completely at odds as Brandi turned on her best friend. But if what Brandi believes is correct, than we can't blame Brandi for why she turned her back. Brando is not the only one who is over the friendship. Lisa says their relationship 'is done. It was done six months ago.'

Brandi and Lisa have been fighting since the second to last episode of Housewives when the ladies were in Puerto Rico and Lisa felt so attacked that her and Ken flew the scene. And things don't look like they are getting any better at the Beverly Hills Housewives reunion. Brandi doesn;t tell Lisa the real reason she's angry and just keeps badgering Lisa at the Beverly Hills Housewives reunion special speculating that Lisa once filed for bankruptcy and previously lived in Calabassas. These accusations are just ludicrous and Brandi is grasping at anything to not get swept away from Housewives and her haters. There is an actual petition going around the web to have Brandi Glanville fired from Housewives! And It's legit! Lisa Vanderpump is obviously getting fed up with having to defend herself to her ex bestie and the other Housewives. So Lisa may actually be leaving the Housewives show after being on the Bravo show since the first season in 2010. After losing her best friend on Housewives, Brandi Glanville, the other ladies ganging up on Lisa Vanderpump, and the 'Dream Team' of Lisa Brandi and Yolanda breaking up, Lisa may be throwing in her Beverly Hills pink cashmere towel.

The gangup was so overwhelming and heartbreaking for Lisa, that Vanderpump, 53, is contemplating exiting Beverly Hills Housewives for good.

 "I don't know, right now I have to be honest. It is a tough season for me," Lisa Vanderpump confessed to RadarOnline about possible leaving The Real Housewives of Beverly Hills. "I have got a lot going on. If it becomes about a bitch fest then it is not something I signed up for; but if it becomes about documenting my life, which is the show I signed up for and having fun and supporting women that is something I want to do. But the way the show was in the end, the last episodes, that is not something I would care to repeat." Vanderpump continues:

"I am not signed on and I don't know whether I am staying and don't think any of us do right now," she added. "Everyone wants to stay, but I don't know. I have a lot to consider I am opening a new business, I have 'Vanderpump Rules' and let's see if they both get picked up and let Bravo make the decision and offer and see where we go from there."

With Lisa's departure, and Joyce and Carlton on the chopping block, there will huge changes for Real Housewives of Beverly Hills next season.

Rumors are swirling that Joanna Krupa could be leaving Miami to join the BH Housewives cast.

It's time for Brandi to make her own mistakes without Lisa cleaning up her mess. If you love something set it free...

And with Lisa's many restaurants and her hit sister show, Vanderpump Rules, maybe it's time for Lisa to move on as well.

Do you believe that Lisa knew about Sheana's affair with Brandi's husband?