Lisa Vanderpump goes way back with Dorit Kemsley's husband, Paul "PK" Kemsley. Like, we're talking long before Dorit joined The Real Housewives of Beverly Hills in Season 7. But now that there appears to be some tension brewing between Lisa and Dorit this season of RHOBH, we have to wonder what kind of toll that has taken on this longtime friendship.

Dorit shared an update on PK's relationship with Lisa during her appearance on Watch What Happens Live with Andy Cohen Tuesday night (clip above). "PK and I go through everything together. I'm not speaking to her, neither is he," Dorit said, adding that it's "sad," which Andy Cohen agreed with.

Dorit and PK sat down with Lisa and her husband, Ken Todd, in the RHOBH Season 9 premiere to clear the air about the drama surrounding the dog Dorit adopted from the Vanderpump Dog Center. "We should've brought the dog back to Vanderpump," PK said during the dinner. "Let's move on."

The couples appeared to resolve this issue and move forward. But, as we all know, the chatter surrounding this situation is far from over. See what we mean in the below preview of an all-new episode of RHOBH coming up on Tuesday at 9/8c.