Definition of heartthrobber in US English:

heartthrobber

noun

informal
  • A person or thing liable to arouse intense emotions; someone or something inspiring excitement, suspense, or passion.

Origin

Early 20th century; earliest use found in Logansport (Indiana) Pharos. From heart + throb + -er.

Pronunciation

heartthrobber

/ˈhɑːtθrɒbə/