Hayate is forced into a situation his only viable option is to do something illegal, unethical, and unbecoming.  After being called a Mom like figure to Nagi, Maria goes to the source on information regarding Nagi’s father.
You totally forgot about me.
Te olvidaste por completo de mí.
Te habías olvidado de mí.
Você se esqueceu 
completamente de mim.