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!

It hurts my heart
To see you in the arms of another love
How I wish, dear amor,
that you and I were together
And how I wish, amor
to have you here with me forever
I cry and cry
knowing that you and I
will never, ever, ever
be able to be together again

It hearts my heart
You left me for no reason
I can't live without your love
And I want you to come back to me
And how I wish, amor
to have you here with me forever

*amor is a Spanish term of affection, not to be confused with the noun "love"