Kyle RichardsShe is still thinking of her best friend. Lorene Shea.

The Real Housewives of Beverly Hills star shared a touching tribute on social media for her best friend and “other half,” who Richards says died on May 1.

“I never imagined I would be posting something like this,” the Bravo star wrote in a May 7 Instagram post that featured pictures of the two of them from over the years.

“This past Sunday we lost Lorene,” Richards captioned the post. She was a failure of the system. Her loved ones are in unimaginable pain because of the system.

Richards said the two has been friends since they were 7 and that they did everything together, “from losing our baby teeth, to having babies & everything in between & everything that followed,” including daily phone calls.

Richards said that being a “Mom, wife, daughter, sister, aunt & friend” was the most important thing to Shea, calling her “kind, thoughtful, smart, beautiful, [and] sentimental.”