In honor of Valentine's Day, we bring you the story of how hearts really can break. Doctors do occasionally diagnose someone with "broken heart syndrome," but the patients aren't necessarily the lovelorn dump-ees of the world. The heart problem, which is more technically known as stress-induced cardiomyopathy, can be brought on by all kinds of emotional and physical stresses. Externally, someone with broken heart syndrome may appear to be having a heart attack, but the physical mechanism is actually quite different. ABC News reports: