between you and me
You can say this to someone when you're about to tell them a secret.
- Julia leaned over and whispered into my ear, "Between you and me, I think Lucas is really cute."
- "Are you going to the wedding?"
"Just between you and me, it think it might be off."
Also "between ourselves" and "between you, me and the gatepost"
This is typically used in British and Australian English but may be used in other varieties of English too.
If someone said "Between you and me" before telling you something, you should
Contributor: Matt Errey