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

1.
entre tú y yo, en confianza
said when you are telling someone something confidentially
:
•
Just between you and me, I think he's going to resign.
Solo entre tú y yo, creo que va a renunciar.
•
What I'm about to tell you is strictly between you and me.
Lo que estoy a punto de contarte es estrictamente entre tú y yo.