between you and me
In confidence; used to impose an obligation to keep something being discussed secret.
Between you and me, I think the boss is crazy.
Let’s keep this conversation between you and me.
This is just between you and me.
Tree at my window, window tree, My sash is lowered when night comes on But let there never be curtain drawn Between you and me. Robert Frost
Let's face it: if you and I have the same capabilities, the same energy, the same staff, if the only thing that's different between you and me is the products we can get, and I can get a better product than you, I'm going to be a better chef. Thomas Keller
If I have to choose between you and me - I like me better. Charlaine Harris
There isn't a generation gap between you and me - there's two. Rex Stout
Just between you and me and the lamppost, Dylan could easily begirl's perfect other half. If I didn't alreadya perfect other half, I might have been thrilled with the gift of my very own gorgeous mutant. James Patterson
Between you and me, that’s the coping mechanism I’ve since adapted and so far, so good. Source: Internet