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Please remember! This translation is my personal work. It is sometimes difficult to translate word for word from Spanish to English, so it may sound awkward in one languange when it is perfectly natural in the other. But I think you can get the general idea!
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You promised me that you would be back soon
That never again would you remember the past
That you wouldn抰 think anymore about that woman
And you even swore you wanted to be mine
You told me you felt an immense love
That I was the medicine for your pain
You wrapped me up in that lovely illusion
And I gave myself completely and unconditionally
And now that time has gone by,
You have forgotten me, and you抮e not coming back

Coward,
You抮e nothing more than a coward
You don抰 have the courage to talk to me
And you keep running away

Coward,
You抮e just a coward
But sooner rather than later
You抣l remember me well

You told me you felt an immense love
That I was the medicine for your pain
You wrapped me up in that lovely illusion
And I gave myself completely and unconditionally
And now that time has gone by,
You have forgotten me, and you抮e not coming back