licencia entoces
There are several ways to tell someone to leave in Spanish. One can say dejar. Another way is to say salir. Yet a third way is to say abandonar.
Voy a irme
nunca me dejes
Alístate para ir.
I would just leave it as "Dexter".
No salgas -or- no te vayas
Baby don't leave = Bebe no te vallas
salir de la casa
Hola, dejame mensaje.
publeo ert poel
No quiero que nunca me dejes
Amame o dejame en paz