Well, then it's not a secret anymore. It's information. If a handful of people know now, hundreds will know soon.
Littlefinger is one of the most dangerous men in Westeros
You wish to know where my loyalty lies? Not with any king or queen, but with the people. The people who suffer under the despots and prosper under just rule
I am not a torturer. Though it so often is what people deserve. And it does provide answer. But they're usually the wrong answers