dance to (someone's) tune

Translations
плясать под (чью-то) дудку
He always dances to her tune, never making decisions independently.
Он всегда пляшет под её дудку, никогда не принимает решения самостоятельно.
Definitions
To conform to someone else's wishes or demands, often without question, as if one is being controlled or manipulated by that person.
Words
tune

noun
мелодия
dance

verb
плясать