Por castigarme tan fuerte [English translation]

Because you punish me so severely

For wanting to do so, you are winning

Because you punish me so severely

You are taking life away from me

Taking me from it through hating you

Not loving you, and I am starting to drink 1...

A knife I stabbed into her

Because she betrayed me with another man

A knife I gashed into her

When she was already dead

Suddenly I remembered

That I was betraying her, too

1. Here I am not sure if what it means is that the person (who is a man, as revealed later on) is taking a knife (tomar un cuchillo) or drinking (tomar [bebida]) , so I don't know.... since it doesn't say what he is taking,

I will choose drink