The phrase "broke one's heart" refers to deeply hurting someone emotionally. Some antonyms for this phrase could be uplifting, inspiring, or heartwarming. These words denote actions or events that make someone feel happy and loved, instead of causing them pain. Other antonyms for "broke one's heart" could include comforting, consoling, or soothing, which indicate actions taken to ease someone's sadness or distress. Overall, using antonyms for "broke one's heart" can help to convey positive emotions and actions that can help heal emotional wounds and foster positive relationships.