I will never forget you.
Nunca te diré adiós was created in 1994.
Nunca olvidaré / nunca se me olvidará...
"Nunca te olvides de mi" means "Never forget me" in English.
Nunca voy a hacerte daño. Nunca te haré herida.
Threats of violence tend to be very specific in Spanish (such as "te voy a partir el hocico," which means "I will bust up your face"), so there isn't really any generic way to say "I will hurt you." The closest approximation would be "te voy a hacer daño," which means "I will harm you," but even that sounds a bit clumsy.
Nunca te conocí.
The cast of Nunca Mais Te Livras de Mim - 1993 includes: Rita Loureiro
Nunca te preocupaste por mi
The single "Nunca Te Olvidare" is translated at "I'll never forget you" in English. This song is the title of the second and the last single album released by Enrique Iglesias in 1998.
Nunca digas como te sientes.
Nunca te he vista antes.
Never forget me.