It's going to be an explosive Total Bellas season finale!
In this clip, Brie tells Nikki that she should meet Bryan's doctor so he can "explain" to her what's happening to Bryan, because Brie doesn't think Nikki really understands what's going on with him.
Nikki explains that it's hard for her when she sees that Brie is being affected by what Bryan is going through, but Brie tells Nikki that she would do "anything in the world" for her husband.
"I will always have his side and I will get through this with him whether it takes six months or five years," Brie tells Nikki.
Brie then tells her sister that she has to "understand" that she has "come to peace" with John Cena not wanting to have kids, to which Nikki replies that "at least John has been honest" from day one.
"And you don't think Bryan has?" Brie asks.
"No, I don't think he's been honest," Nikki says.
Watch the shocking clip above to see the sisters argue!
Watch the series premiere of Total Bellas Wednesday, Oct. 6 at 9:30 p.m. in AU, only on E!