'RHOC' Vicki Gunvalson, Tamra Judge Fighting, Not Speaking After Brooks Ayers Cancer Drama

These two might have one of the most on-again, off-again relationship for any besties we know. The Real Housewives of Orange County stars Vicki Gunvalson and Tamra Barney Judge may have been as thick as thieves during season 10 of the hit Bravo series, but it looks like the stars are once again finding themselves fighting with each other and not speaking, now that the season has wrapped. It seems that what ultimately led to the downfall in the pal's relationship was Judge's question the validity of Gunvalson's ex-boyfriend, Brooks Ayers', cancer treatment.

According to Radar Online, it was the most recent episodes of the series that are what put a pin in the gals' relationship, after Gunvalson allegedly saw her frenemy stirring up drama regarding his illness.

"Vicki isn't talking to Tamra and is vowing to cut her out of her life for good this time," an insider explained to the new site. "Vicki had been willing to give Tamra another chance after all of the divorce drama with ex-husband, Simon Barney, but this was the final straw."

A photo posted by Vicki Gunvalson (@vickigunvalson) on Jul 27, 2015 at 11:36am PDT

According to The Holywood Gossip, fans have been watching as co-stars of the series have been question whether or not Ayers has cancer, and Gunvalson allegedly has been watching the girls talk about it behind her back now that the show is airing on TV.

"Tamra went behind Vicki's back for months betraying her confidence about Brooks' cancer," the insider explained. "Even though Vicki and Brooks are no longer together, she can't forgive Tamra for this ultimate betrayal."

Radar reported, "There is no coming back for Vicki and Tamra. Their relationship was already on very fragile ground, and this was the nail in the coffin."

As we previously reported, Ayers came out in the press recently explaining to that he does in fact have cancer, as a way to quiet the naysayers.