United Kingdom, July 14 -- Lala Kent knew about Brock Davies' affair before it became public knowledge.

The 34-year-old reality star has revealed that Scheana Shay made her aware of Brock's infidelity before she wrote about it in her new memoir, My Good Side.

She explained on her Give Them Lala podcast: "I did [know about the affair]. But not for a while.

"So that [excerpt] came out and Scheana called me and said, 'I just want to give you the heads-up that tomorrow this article is coming out with the excerpt. And I may need to tap you in. I'm very nervous.'

"I won't share exactly what she said on the phone because that's between her and her husband. But I thought the excerpt that was pulled from her book was beautifully written. Well ...