Debes saber [English translation]

You Must Know (It Is Necessary To Know)

You must know how to stop smiling,

If joy went away,

Only sadness is left for you,

And days of unhappiness.

You must know that through this angst,

One's dignity must be saved,

Even if pain overwhelms you,

You have to leave and never return.

Beg to the destiny which abandons you,

Don't make me suffer, please,

You must pretend you're crying,

And bury it in your heart.

You must know, understand in due time,

When love has gone away,

You must leave indifferently,

Even if you suffer in silence.

You must know how to drown your sorrow,

And disguise your great pain,

And hold back hidden hatred,

If you live in a hell.

You must know how to stay like ice,

If rancor burns passion,

You must know how to refrain from tears,

And I love her so much, that I can't bear it anymore.

You must know that I...

I