The 58-year-old television personality said on Monday's episode of Watch What Happens Live that she's "okay" with Glanville hanging out with Richards, her new co-star on The Real Housewives of Beverly Hills.
"I'm okay with that. I mean, that's up to them. Everybody finds their own friendships. I have no problem with that whatsoever," she told host Andy Cohen.
Vanderpump had a falling out with Glanville in Season 5. When asked who she can't see herself being friends with again between Glanville and Lisa Rinna, the star answered Glanville.
"Well, 'never' is a big word, but Brandi Glanville," she responded.
Glanville appeared to respond to Vanderpump's remarks in a pair of tweets during the episode. She referred to incidents where she called Vanderpump an expletive and also slapped the star.
"@Andy @BravoWWHL what is it that I did that was so much worse than the others?" Glanville wrote.
"@Andy @BravoWWHL that was a love tap I never meant to physically hurt you it was 'puppy play,'" she added of the slap.
The Real Housewives of Beverly Hills will return for a ninth season on Bravo in February. The series co-stars Richards, Rinna, Kyle Richards, Erika Jayne, Dorit Kemsley and Teddi Mellencamp.