Oh, that's a secret, OK? Because slipping out of the dorm in the night is severely punished.

Last time I sent out my humble work, the afterword to "left-right", written on the promise that you'd keep it secret from him, this time it's the afterword to that afterword.

She told me the story in confidence.

He hasn't said anything publicly, but in confidence he told me he's getting married.

Between you and me, he was dismissed for bribery.

Between you and me, I'm going to quit my present job soon.

Just between you and me, he is a liar.

I'll tell you only if you promise to keep it to yourself.

Between us, he is a little foolish.

Between us, she was ill.

Between you and me, John's idea doesn't appeal to me very much.

I told you that in confidence, so why did you tell Jane about it?

I went there in private.

We have no secrets from each other.

Let's keep him in the dark until we know more.

Hey, what's the big secret? Come on; let me in on it.

Keep it secret, please.

Let's keep this matter between ourselves.

Please keep this secret.