Topic: Hiding some of a POV character's thoughts?
For a future book, I have a POV character who regularly meets with another character about whom he knows a big secret. Is it reasonable to limit the narration of the POV character's thoughts to exclude any mention of that secret from the reader? It's part of a plot twist, but I want to make sure it's not considered a big cheat from a reader's perspective. My hope is to write around that secret so there is no need to mention it throughout most of the book.
I did something similar in a single scene in my current book, although in that book, the POV character's scene was a very small one, so writing around the secret was easy and, I felt, totally reasonable.