In Roman mythology, the character known for their tragic love story that ends in sacrifice is Pyramis (or Pyramus) and Thisbe. Their tale parallels that of Romeo and Juliet, where their love is forbidden, leading to a series of misunderstandings and ultimately their tragic deaths. Their story symbolizes themes of love, fate, and the consequences of societal constraints. The couple’s passion and united fate underscore the timeless nature of love and sacrifice in mythology.