Is Ariana Madix's friendship with Scheana Marie on the rocks?

Ariana Madix Talks 'Vanderpump Rules' Season Four & Lisa Vanderpump

In a new sneak peek at the fourth season of Vanderpump Rules, Madix is seen questioning her friendship with Scheana Marie after spotting her on-screen nemesis, Kristen Doute, at her longtime best friend's birthday party.

"Something's telling me I may or may not have a fake friend," Madix tells boyfriend Tom Sandoval of Scheana Marie. "When she says things like, 'Well, she's never done anything to me,' I'm like, 'When did I not become important?' I have a really amazing life, and I don't have room in my life for f**king bulls**t."

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After hearing what Madix had to say, Sandoval said he stood by her in whatever she decided to do, when it came to her friendship with Scheana Marie.

"Kristen wanted me to get hit by planes, trains, she wanted me to die," Madix later said in a confessional, "and it absolutely should not be okay with my best friend Scheana."

In her own confessional, Scheana Marie explained, "I've seen Kristen several times over the past several months, and she's definitely more pleasant to be around. I still have a f**king soft spot for Kristen. There's something about her that I just can't hate."

For more of Ariana Madix and Scheana Marie, tune into the fourth season premiere of Vanderpump Rules on Monday, Nov. 2, at 9 p.m. on Bravo, and check out the sneak peek clip below.