Definition of “break sb's heart” - English Dictionary

british dictionary

“break sb's heart” in British English

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break sb's heart

B2 to make someone who loves you very sad, usually by telling that person you have stopped loving them :

He's broken a lot of girls' hearts.

B2 If an event or situation breaks your heart, it makes you feel very sad:

She really broke her mother's heart when she left home.

(Definition of “break sb's heart” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)