Broken heart
A broken heart was a feeling of grief or loss after a failed romantic relationship or the loss of someone.
(TOS: "Who Mourns for Adonais?")
In 2364, Captain Jean-Luc Picard noted that Haven had been said to mend souls and heal broken hearts. (TNG: "Haven")
(TNG: "The Hunted")
In 2367, Lore noted that "Often Wrong" got a broken heart. (TNG: "Brothers")
(DS9: "Cardassians")
(DS9: "Through the Looking Glass")
(DS9: "Fascination")
(VOY: "The Q and the Grey")
(DS9: "A Simple Investigation")
(DS9: "Ferengi Love Songs")
(DS9: "Call to Arms")
(VOY: "The Disease")
(DS9: "Change of Heart")
(VOY: "Fair Haven")
(VOY: "Inside Man")
(VOY: "The Emperor's New Cloak")