Break Someone's Heart Meaning

(idiomatic) To cause a person to feel grief or sadness.

Example:   He broke my heart, so I broke his jaw.
1976, Elton John, Don't Go Breaking My Heart,
  Don't go breaking my heart / I couldn't if I tried / Honey if I get restless / Baby you're not that kind.
2010, Justin Bieber featuring Ludacris, Baby
  "We're just friends," what are you sayin'? / Said "there's another," and looked right in my eyes / My first love broke my heart for the first time.