because of him/her
Por su culpa hay movida en la favela.
Because of him there's trouble in the favela.
— Ciudad de Dios (2002)
Ya perdimos mucho tiempo por su culpa.
We've already wasted a lot of time because of him.
— Leviatán (2014)
Y yo le digo que es por su culpa que yo soy como soy.
And I tell him that it's his fault that I am the way I am.
— Fresas salvajes (1957)
Por su culpa, vive una vida miserable.
Because of him, she lives a miserable life.