Spanish phrase
Lo que ~, se queda entre nosotros.
Meaning
What ___ stays between us.
When to use it
Declares that information will be kept private. Informal reassurance among friends or close acquaintances not to spread a shared secret.
Example dialogue
Lo que pasó anoche, se queda entre nosotros.
What happened last night stays between us.
De acuerdo, no le diré a nadie.
All right, I won't tell anyone.