between you and me
US /bɪˈtwin ju ænd mi/
UK /bɪˈtwin ju ænd mi/

1.
tussen jou en mij, onder ons
said when you are telling someone something confidentially
:
•
Just between you and me, I think he's going to resign.
Even tussen jou en mij, ik denk dat hij gaat aftreden.
•
What I'm about to tell you is strictly between you and me.
Wat ik je ga vertellen is strikt tussen jou en mij.