What does ponerse de parte de alguien mean?
Expression
to take somebody's side
Backing one of two people in somebody else's conflict. It nearly always appears in the negative and as a reproach — no te pongas de su parte — because the speaker expected unconditional support and got fairness instead. In Spanish, you agree with your friend first and tell him the truth afterwards.
Mi madre siempre se pone de parte de mi hermano.
